Active Directory schema changes in Exchange Server 2019 and SE

Article
2025-05-09

APPLIES TO: no-img-16 2016 yes-img-19 2019 yes-img-se Subscription Edition

Tip

Looking for the Active Directory schema changes for Exchange Server 2016? See Active Directory schema changes in Exchange Server 2016.

This reference topic provides a summary of the Active Directory schema changes that are made when you install Exchange Server 2019 or Exchange Server SE in your organization. Refer to the .ldf files for more information about changes to the Active Directory schema. The .ldf files are located in the \Setup\Data\ directory in the Exchange installation files.

Exchange schema updates are cumulative. Each Cumulative Update (CU) includes all of the changes that were included in previous releases. This means that if you skip a CU, you might still need to apply schema updates even if the CU that you're installing doesn't include its own changes.

Current Exchange 2019 release installed	New Exchange 2019 release being installed	Are schema updates required?
Release to Manufacturing	Cumulative Update 4 through Cumulative Update 9	Yes, schema updates are required. You need to apply the CU8 schema updates.
Cumulative Update 8	Cumulative Update 9 through Cumulative Update 15	Yes, schema updates are required. You need to apply the CU10 schema updates.

Note

The Active Directory schema changes that are described in this topic might not apply to all editions of an Exchange 2019 version. To verify that Active Directory has been successfully prepared, see the Exchange Active Directory versions section in Prepare Active Directory and domains for Exchange 2019.

Exchange 2019 CU15 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU15.

Exchange 2019 CU14 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU14.

Exchange 2019 CU13 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU13.

Exchange 2019 CU12 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU12.

Exchange 2019 CU11 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU11.

Exchange 2019 CU10 Active Directory schema changes

This section summarizes the changes that are made to the Active Directory schema when you install Exchange 2019 CU10. This section includes the following subsections:

Classes modified by Exchange 2019 CU10

Classes modified by Exchange 2019 CU10

This section contains the classes modified in Exchange 2019 CU10.

Class	Change	Attribute/Class
`ms-Exch-Storage-Group`	delete: `possSuperiors`	`computer`

Exchange 2019 CU9 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU9.

Exchange 2019 CU8 Active Directory schema changes

This section summarizes the changes that are made to the Active Directory schema when you install Exchange 2019 CU8. This section includes the following subsections:

Classes modified by Exchange 2019 CU8
Attributes added by Exchange 2019 CU8

Classes modified by Exchange 2019 CU8

This section contains the classes modified in Exchange 2019 CU8.

Class	Change	Attribute/Class
`ms-Exch-Auth-Auth-Server`	add: `mayContain`	`msExchCoexistenceDomains`

Attributes added by Exchange 2019 CU8

This section contains the attributes added in Exchange 2019 CU8.

ms-Exch-Coexistence-Domains

Exchange 2019 CU7 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU7.

Exchange 2019 CU6 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU6.

Exchange 2019 CU5 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU5.

Exchange 2019 CU4 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU4.

Exchange 2019 CU3 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU3.

Exchange 2019 CU2 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU2.

Exchange 2019 CU1 Active Directory schema changes

No changes are made to the Active Directory schema in Exchange 2019 CU1.

However, a reduction in Active Directory permissions is made: The AdminSDHolder object on the domain is updated to remove the "Allow" ACE that grants the "Exchange Trusted Subsystem" group the "Write DACL" right on the "Group" inherited object types. For more information, see KB 4490059.

Exchange 2019 RTM Active Directory schema changes

This section summarizes the changes that are made to the Active Directory schema when you install Exchange 2019 RTM. This section includes the following subsections:

Classes added by Exchange 2019 RTM
Classes modified by Exchange 2019 RTM
Attributes added by Exchange 2019 RTM
Global catalog attributes added by Exchange 2019 RTM
Attributes modified by Exchange 2019 RTM
Object IDs added by Exchange 2019 RTM
Indexed attributes added by Exchange 2019 RTM
Property sets modified by Exchange 2019 RTM
MAPI IDs added by Exchange 2019 RTM
Extended rights added by Exchange 2019 RTM

Note

No changes to the Active Directory schema were made between Exchange 2019 Preview and Exchange 2019 RTM.

Classes added by Exchange 2019 RTM

Class	Change
`Exch-Mapi-Virtual-Directory`	`ntdsSchemaAdd`
`Exch-Push-Notifications-App`	`ntdsSchemaAdd`
`ms-Exch-Account-Forest`	`ntdsSchemaAdd`
`ms-Exch-ActiveSync-Device-Autoblock-Threshold`	`ntdsSchemaAdd`
`ms-Exch-Auth-Auth-Config`	`ntdsSchemaAdd`
`ms-Exch-Auth-Auth-Server`	`ntdsSchemaAdd`
`ms-Exch-Auth-Partner-Application`	`ntdsSchemaAdd`
`ms-Exch-Auth-Policy`	`ntdsSchemaAdd`
`ms-Exch-Client-Access-Rule`	`ntdsSchemaModify`
`ms-Exch-Config-Settings`	`ntdsSchemaAdd`
`ms-Exch-Encryption-Virtual-Directory`	`ntdsSchemaAdd`
`ms-Exch-Exchange-Transport-Server`	`ntdsSchemaAdd`
`ms-Exch-Hosted-Content-Filter-Config`	`ntdsSchemaAdd`
`ms-Exch-Http-Delivery-Connector`	`ntdsSchemaAdd`
`ms-Exch-Hygiene-Configuration`	`ntdsSchemaAdd`
`ms-Exch-Intra-Organization-Connector`	`ntdsSchemaModify`
`ms-Exch-Mailbox-Policy`	`ntdsSchemaAdd`
`ms-Exch-Mailflow-Policy`	`ntdsSchemaAdd`
`ms-Exch-Mailflow-Policy-Collection`	`ntdsSchemaAdd`
`ms-Exch-Malware-Filter-Config`	`ntdsSchemaAdd`
`ms-Exch-MSO-Forward-Sync-Divergence`	`ntdsSchemaAdd`
`ms-Exch-MSO-Sync-Service-Instance`	`ntdsSchemaAdd`
`ms-Exch-Organization-Upgrade-Policy`	`ntdsSchemaAdd`
`ms-Exch-Protocol-Cfg-SIP-Container`	`ntdsSchemaAdd`
`ms-Exch-Protocol-Cfg-SIP-FE-Server`	`ntdsSchemaAdd`
`ms-Exch-Resource-Policy`	`ntdsSchemaAdd`
`ms-Exch-Safe-Attachment-Protection-Config`	`ntdsSchemaAdd`
`ms-Exch-Smart-Links-Protection-Config`	`ntdsSchemaAdd`
`ms-Exch-Team-Mailbox-Provisioning-Policy`	`ntdsSchemaAdd`
`ms-Exch-Throttling-Policy`	`ntdsSchemaModify`
`ms-Exch-Unified-Policy`	`ntdsSchemaAdd`
`ms-Exch-Unified-Rule`	`ntdsSchemaAdd`
`ms-Exch-Workload-Policy`	`ntdsSchemaAdd`

Classes modified by Exchange 2019 RTM

Class	Change	Attribute/Class
`Mail-Recipient`	add: `mayContain`	`msExchAdministrativeUnitLink`
`Mail-Recipient`	add: `mayContain`	`msExchAuthPolicyLink`
`Mail-Recipient`	add: `mayContain`	`msExchImmutableSid`
`Mail-Recipient`	add: `mayContain`	`msExchUGEventSubscriptionLink`
`ms-Exch-Base-Class`	add: `mayContain`	`msExchUserHoldPolicies`
`ms-Exch-Configuration-Unit-Container`	add: `mayContain`	`msExchAuthPolicyLink`
`ms-Exch-Configuration-Unit-Container`	add: `mayContain`	`msExchMSOForwardSyncReplayList`
`ms-Exch-Container`	add: `mayContain`	`msExchScopeFlags`
`ms-Exch-Mail-Storage`	add: `mayContain`	`msExchDataEncryptionPolicyLink`
`ms-Exch-Organization-Container`	add: `mayContain`	`msExchDataEncryptionPolicyLink`
`Exch-Accepted-Domain`	add:`mayContain`	`msExchOfflineOrgIdHomeRealmRecord`
`Exch-Base-Class`	add:`mayContain`	`msExchCapabilityIdentifiers`
`Exch-Base-Class`	add:`mayContain`	`msExchObjectID`
`Exch-Base-Class`	add:`mayContain`	`msExchProvisioningTags`
`Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchArchiveRelease`
`Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchMailboxRelease`
`Exch-Exchange-Server`	add:`mayContain`	`msExchArchiveRelease`
`Exch-Exchange-Server`	add:`mayContain`	`msExchMailboxRelease`
`Exch-MDB-Availability-Group`	add:`mayContain`	`msExchEvictedMembersLink`
`Exch-OAB`	add:`mayContain`	`msExchLastUpdateTime`
`Exch-OWA-Mailbox-Policy`	add:`mayContain`	`msExchConfigurationXML`
`Exch-OWA-Virtual-Directory`	add:`mayContain`	`msExchConfigurationXML`
`Exch-On-Premises-Organization`	add:`mayContain`	`msExchTrustedDomainLink`
`Exch-Organization-Container`	add:`mayContain`	`msExchMaxABP`
`Exch-Organization-Container`	add:`mayContain`	`msExchMaxOAB`
`Exch-Organization-Container`	add:`mayContain`	`pFContacts`
`Exch-Team-Mailbox-Provisioning-Policy`	add:`mayContain`	`msExchConfigurationXML`
`Group`	add: `auxiliaryClass`	`msExchMailStorage`
`Mail-Recipient`	add:`mayContain`	`msExchLocalizationFlags`
`Mail-Recipient`	add:`mayContain`	`msExchRoleGroupType`
`Mail-Recipient`	add:`mayContain`	`ms-DS-GeoCoordinates-Altitude`
`Mail-Recipient`	add:`mayContain`	`ms-DS-GeoCoordinates-Latitude`
`Mail-Recipient`	add:`mayContain`	`ms-DS-GeoCoordinates-Longitude`
`Mail-Recipient`	add:`mayContain`	`msExchRecipientSoftDeletedStatus`
`Mail-Recipient`	add:`mayContain`	`msExchWhenSoftDeletedTime`
`Mail-Recipient`	add:`mayContain`	`msExchHomeMTASL`
`Mail-Recipient`	add:`mayContain`	`msExchMailboxMoveSourceArchiveMDBLinkSL`
`Mail-Recipient`	add:`mayContain`	`msExchMailboxMoveSourceMDBLinkSL`
`Mail-Recipient`	add:`mayContain`	`msExchMailboxMoveTargetArchiveMDBLinkSL`
`Mail-Recipient`	add:`mayContain`	`msExchMailboxMoveTargetMDBLinkSL`
`Mail-Recipient`	add:`mayContain`	`ms-exch-group-external-member-count`
`Mail-Recipient`	add:`mayContain`	`ms-exch-group-member-count`
`Mail-Recipient`	add:`mayContain`	`msExchGroupExternalMemberCount`
`Mail-Recipient`	add:`mayContain`	`msExchGroupMemberCount`
`Mail-Recipient`	add:`mayContain`	`msExchShadowWhenSoftDeletedTime`
`Mail-Recipient`	add:`mayContain`	`msExchPublicFolderMailbox`
`Mail-Recipient`	add:`mayContain`	`msExchPublicFolderSmtpAddress`
`Mail-Recipient`	add: `mayContain`	`msExchAuxMailboxParentObjectIdLink`
`Mail-Recipient`	add: `mayContain`	`msExchStsRefreshTokensValidFrom`
`Mail-Recipient`	add:`mayContain`	`msDS-ExternalDirectoryObjectId`
`Mail-Recipient`	add:`mayContain`	`msExchGroupSecurityFlags`
`Mail-Recipient`	add:`mayContain`	`msExchMultiMailboxDatabasesLink`
`Ms-Exch-Organization-Container`	add:`mayContain`	`ms-exch-organization-flags-2`
`Top`	add:`mayContain`	`msExchMultiMailboxDatabasesBL`
`Top`	add:`mayContain`	`msExchMultiMailboxLocationsBL`
`Top`	add:`mayContain`	`msExchAccountForestBL`
`Top`	add:`mayContain`	`msExchTrustedDomainBL`
`Top`	add:`mayContain`	`msExchAcceptedDomainBL`
`Top`	add:`mayContain`	`msExchHygieneConfigurationMalwareBL`
`Top`	add:`mayContain`	`msExchHygieneConfigurationSpamBL`
`Top`	add:`mayContain`	`msExchEvictedMembersBL`
`Top`	add: `mayContain`	`msExchOABGeneratingMailboxBL`
`Top`	add: `mayContain`	`msExchAuxMailboxParentObjectIdBL`
`Top`	add: `mayContain`	`msExchAdministrativeUnitBL`
`Top`	add: `mayContain`	`msExchAuthPolicyBL`
`Top`	add: `mayContain`	`msExchDataEncryptionPolicyBL`
`Top`	add: `mayContain`	`msExchUGEventSubscriptionBL`
`ms-Exch-Accepted-Domain`	add:`mayContain`	`msExchHygieneConfigurationLink`
`ms-Exch-Accepted-Domain`	add:`mayContain`	`msExchTransportResellerSettingsLinkSL`
`ms-Exch-Account-Forest`	`possSuperiors`	`msExchContainer`
`ms-Exch-Account-Forest`	add:`mayContain`	`msExchPartnerId`
`ms-Exch-Active-Sync-Device`	add:`mayContain`	`msExchDeviceClientType`
`ms-Exch-Availability-Address-Space`	add:`mayContain`	`msExchFedTargetAutodiscoverEPR`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchDirsyncAuthorityMetadata`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchDirsyncStatusAck`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchEdgeSyncConfigFlags`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchHABRootDepaPreviewentLink`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchDefaultPublicFolderMailbox`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchForestModeFlag`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchELCMailboxFlags`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchCanaryData0`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchCanaryData1`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchCanaryData2`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchCorrelationId`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchTenantCountry`
`ms-Exch-Base-Class`	add:`mayContain`	`msExchConfigurationXML`
`ms-Exch-Base-Class`	add: `mayContain`	`msExchMultiMailboxGUIDs`
`ms-Exch-Base-Class`	add: `mayContain`	`msExchMultiMailboxLocationsLink`
`ms-Exch-Coexistence-Relationship`	add:`mayContain`	`msExchCoexistenceOnPremisesSmartHost`
`ms-Exch-Coexistence-Relationship`	add:`mayContain`	`msExchCoexistenceSecureMailCertificateThumbprint`
`ms-Exch-Coexistence-Relationship`	add:`mayContain`	`msExchCoexistenceTransportServers`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchDirsyncStatus`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchIsDirsyncStatusPending`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchDirSyncServiceInstance`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchOrganizationUpgradePolicyLink`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchManagementSiteLinkSL`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchOrganizationUpgradePolicyLinkSL`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantCompletionTargetVector`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantFlags`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantSafeLockdownSchedule`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantSourceForest`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantStartLockdown`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantStartRetired`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantStartSync`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantStatus`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantTargetForest`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchRelocateTenantTransitionCounter`
`ms-Exch-Configuration-Unit-Container`	add:`mayContain`	`msExchSyncCookie`
`ms-Exch-Control-Point-Config`	add:`mayContain`	`msExchRMSOnlineCertificationLocationUrl`
`ms-Exch-Control-Point-Config`	add:`mayContain`	`msExchRMSOnlineKeySharingLocationUrl`
`ms-Exch-Control-Point-Config`	add:`mayContain`	`msExchRMSOnlineLicensingLocationUrl`
`ms-Exch-Custom-Attributes`	add:`mayContain`	`msExchExtensionCustomAttribute1`
`ms-Exch-Custom-Attributes`	add:`mayContain`	`msExchExtensionCustomAttribute2`
`ms-Exch-Custom-Attributes`	add:`mayContain`	`msExchExtensionCustomAttribute3`
`ms-Exch-Custom-Attributes`	add:`mayContain`	`msExchExtensionCustomAttribute4`
`ms-Exch-Custom-Attributes`	add:`mayContain`	`msExchExtensionCustomAttribute5`
`ms-Exch-Domain-Content-Config`	add:`mayContain`	`msExchContentByteEncoderTypeFor7BitCharsets`
`ms-Exch-Domain-Content-Config`	add:`mayContain`	`msExchContentPreferredInternetCodePageForShiftJis`
`ms-Exch-Domain-Content-Config`	add:`mayContain`	`msExchContentRequiredCharSetCoverage`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchWorkloadManagementPolicyLink`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringDeferAttempts`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringDeferWaitTime`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringFlags`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringPrimaryUpdatePath`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringSecondaryUpdatePath`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringUpdateFrequency`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringUpdateTimeout`
`ms-Exch-Exchange-Server`	add:`mayContain`	`msExchMalwareFilteringScanTimeout`
`ms-Exch-Fed-OrgId`	add:`mayContain`	`msExchFedDelegationTrustSL`
`ms-Exch-Hosted-Content-Filter-Config`	add:`mayContain`	`msExchSpamCountryBlockList`
`ms-Exch-Hosted-Content-Filter-Config`	add:`mayContain`	`msExchSpamLanguageBlockList`
`ms-Exch-Hosted-Content-Filter-Config`	add:`mayContain`	`msExchSpamNotifyOutboundRecipients`
`ms-Exch-Hosted-Content-Filter-Config`	add:`mayContain`	`msExchSpamDigestFrequency`
`ms-Exch-Hosted-Content-Filter-Config`	add:`mayContain`	`msExchSpamQuarantineRetention`
`ms-Exch-MDB`	add:`mayContain`	`msExchCalendarLoggingQuota`
`ms-Exch-MRS-Request`	add:`mayContain`	`msExchMailboxMoveSourceMDBLinkSL`
`ms-Exch-MRS-Request`	add:`mayContain`	`msExchMailboxMoveStorageMDBLinkSL`
`ms-Exch-MRS-Request`	add:`mayContain`	`msExchMailboxMoveTargetMDBLinkSL`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchMSOForwardSyncNonRecipientCookie`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchMSOForwardSyncRecipientCookie`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchMSOForwardSyncReplayList`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchAccountForestLink`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchActiveInstanceSleepInterval`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchPassiveInstanceSleepInterval`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchSyncDaemonMaxVersion`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchSyncDaemonMinVersion`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchSyncServiceInstanceNewTenantMaxVersion`
`ms-Exch-MSO-Sync-Service-Instance`	add:`mayContain`	`msExchSyncServiceInstanceNewTenantMinVersion`
`ms-Exch-Mail-Gateway`	add:`mayContain`	`msExchHomeMDBSL`
`ms-Exch-Mail-Gateway`	add:`mayContain`	`msExchHomeMTASL`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchPreviousArchiveDatabase`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchTeamMailboxExpiration`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchTeamMailboxOwners`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchTeamMailboxSharePointLinkedBy`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchTeamMailboxSharePointUrl`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchTeamMailboxShowInClientList`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchCalendarLoggingQuota`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchArchiveDatabaseLinkSL`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchDisabledArchiveDatabaseLinkSL`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchHomeMDBSL`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchMailboxMoveTargetMDBLinkSL`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchPreviousArchiveDatabaseSL`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchPreviousHomeMDBSL`
`ms-Exch-Mail-Storage`	add: `mayContain`	`msExchMailboxContainerGuid`
`ms-Exch-Mail-Storage`	add: `mayContain`	`msExchUnifiedMailbox`
`ms-Exch-Mail-Storage`	add:`mayContain`	`msExchUserCulture`
`ms-Exch-Mailflow-Policy`	add:`mayContain`	`msExchImmutableId`
`ms-Exch-Malware-Filter-Config`	add:`mayContain`	`msExchMalwareFilterConfigExternalSenderAdminAddress`
`ms-Exch-Malware-Filter-Config`	add:`mayContain`	`msExchMalwareFilterConfigInternalSenderAdminAddress`
`ms-Exch-OAB`	add:`mayContain`	`msExchOffLineABServerSL`
`ms-Exch-OAB`	add: `mayContain`	`msExchOABGeneratingMailboxLink`
`ms-Exch-OWA-Mailbox-Policy`	add:`mayContain`	`msExchOWASetPhotoURL`
`ms-Exch-OWA-Virtual-Directory`	add:`mayContain`	`msExchOWASetPhotoURL`
`ms-Exch-Organization-Container`	add:`mayContain`	`msExchOrganizationFlags2`
`ms-Exch-Organization-Container`	add:`mayContain`	`msExchUMAvailableLanguages`
`ms-Exch-Organization-Container`	add:`mayContain`	`msExchWACDiscoveryEndpoint`
`ms-Exch-Organization-Container`	add:`mayContain`	`msExchAdfsAuthenticationRawConfiguration`
`ms-Exch-Organization-Container`	add:`mayContain`	`msExchServiceEndPointURL`
`ms-Exch-Private-MDB`	add:`mayContain`	`msExchMailboxDatabaseTransportFlags`
`ms-Exch-Public-Folder`	add:`mayContain`	`msExchPublicFolderEntryId`
`ms-Exch-Resource-Policy`	add:`mayContain`	`msExchCustomerExpectationCritical`
`ms-Exch-Resource-Policy`	add:`mayContain`	`msExchDiscretionaryCritical`
`ms-Exch-Resource-Policy`	add:`mayContain`	`msExchInternalMaintenanceCritical`
`ms-Exch-Resource-Policy`	add:`mayContain`	`msExchUrgentCritical`
`ms-Exch-Routing-Group-Connector`	add:`mayContain`	`msExchHomeMTASL`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilterConfigFlags`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilterConfigFromAddress`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilterConfigInternalBody`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilterConfigInternalSenderAdminAddress`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilterConfigInternalSubject`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilteringScanTimeout`
`ms-Exch-Safe-Attachment-Protection-Config`	add:`mayContain`	`msExchMalwareFilteringUpdateFrequency`
`ms-Exch-Site-Connector`	add:`mayContain`	`msExchHomeMTASL`
`ms-Exch-Smart-Links-Protection-Config`	add:`mayContain`	`msExchAddressRewriteExceptionList`
`ms-Exch-Smart-Links-Protection-Config`	add:`mayContain`	`msExchSpamFlags`
`ms-Exch-Tenant-Perimeter-Settings`	add:`mayContain`	`msExchTransportResellerSettingsLinkSL`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchThrottlingPolicyFlags`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchAnonymousThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchEASThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchEWSThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchGeneralThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchIMAPThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchOWAThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchPOPThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchPowershellThrottlingPolicyStateEx`
`ms-Exch-Throttling-Policy`	add:`mayContain`	`msExchRCAThrottlingPolicyStateEx`
`ms-Exch-Transport-Rule`	add:`mayContain`	`msExchTransportRuleImmutableId`
`ms-Exch-Transport-Rule`	add:`mayContain`	`msExchImmutableId`
`ms-Exch-Transport-Settings`	add:`mayContain`	`msExchTranspoPreviewaxRetriesForLocalSiteShadow`
`ms-Exch-Transport-Settings`	add:`mayContain`	`msExchTranspoPreviewaxRetriesForRemoteSiteShadow`
`ms-Exch-Transport-Settings`	add:`mayContain`	`msExchConfigurationXML`
`ms-Exch-Virtual-Directory`	add:`mayContain`	`msExchMRSProxyFlags`
`ms-Exch-Virtual-Directory`	add:`mayContain`	`msExchMRSProxyMaxConnections`

Attributes added by Exchange 2019 RTM

ms-DS-External-Directory-Object-Id
ms-DS-GeoCoordinates-Altitude
ms-DS-GeoCoordinates-Latitude
ms-DS-GeoCoordinates-Longitude
ms-Exch-Accepted-Domain-BL
ms-Exch-Account-Forest-BL
ms-Exch-Account-Forest-Link
ms-Exch-ActiveSync-Device-AutoBlock-Duration
ms-Exch-ActiveSync-Device-Autoblock-Threshold-Incidence-Duration
ms-Exch-ActiveSync-Device-Autoblock-Threshold-Incidence-Limit
ms-Exch-ActiveSync-Device-Autoblock-Threshold-Type
ms-Exch-Adfs-Authentication-Raw-Configuration
ms-Exch-Administrative-Unit-BL
ms-Exch-Administrative-Unit-Link
ms-Exch-Anonymous-Throttling-Policy-State-Ex
ms-Exch-Archive-Database-Link-SL
ms-Exch-Auth-Application-Identifier
ms-Exch-Auth-App-Secret
ms-Exch-Auth-Authorization-Url
ms-Exch-Auth-Auth-Server-Type
ms-Exch-Auth-Certificate-Data
ms-Exch-Auth-Certificate-Thumbprint
ms-Exch-Auth-Flags
ms-Exch-Auth-Issuer-Name
ms-Exch-Auth-Issuing-Url
ms-Exch-Auth-Linked-Account
ms-Exch-Auth-Metadata-Url
ms-Exch-Auth-Policy-BL
ms-Exch-Auth-Policy-Link
ms-Exch-Auth-Realm
ms-Exch-Aux-Mailbox-Parent-Object-Id-BL
ms-Exch-Aux-Mailbox-Parent-Object-Id-Link
ms-Exch-Canary-Data-0
ms-Exch-Canary-Data-1
ms-Exch-Canary-Data-2
ms-Exch-Content-Byte-Encoder-Type-For-7-Bit-Charsets
ms-Exch-Content-Preferred-Internet-Code-Page-For-Shift-Jis
ms-Exch-Content-Required-Char-Set-Coverage
ms-Exch-Correlation-Id
ms-Exch-Customer-Expectation-Critical
ms-Exch-Customer-Expectation-Overloaded
ms-Exch-Customer-Expectation-Underloaded
ms-Exch-Data-Encryption-Policy-BL
ms-Exch-Data-Encryption-Policy-Link
ms-Exch-Default-Public-Folder-Mailbox
ms-Exch-Device-Client-Type
ms-Exch-Dirsync-Authority-Metadata
ms-Exch-Dir-Sync-Service-Instance
ms-Exch-Dirsync-Status
ms-Exch-Dirsync-Status-Ack
ms-Exch-Disabled-Archive-Database-Link-SL
ms-Exch-Discretionary-Critical
ms-Exch-Discretionary-Overloaded
ms-Exch-Discretionary-Underloaded
ms-Exch-EAS-Throttling-Policy-State-Ex
ms-Exch-Edge-Sync-Config-Flags
ms-Exch-Encryption-Throttling-Policy-State-Ex
ms-Exch-EWS-Throttling-Policy-State-Ex
ms-Exch-Extension-Custom-Attribute-1
ms-Exch-Extension-Custom-Attribute-2
ms-Exch-Extension-Custom-Attribute-3
ms-Exch-Extension-Custom-Attribute-4
ms-Exch-Extension-Custom-Attribute-5
ms-Exch-External-Directory-Object-Class
ms-Exch-Fed-Delegation-Trust-SL
ms-Exch-Forest-Mode-Flag
ms-Exch-General-Throttling-Policy-State-Ex
ms-Exch-Group-External-Member-Count
ms-Exch-Group-Member-Count
ms-Exch-Group-Security-Flags
ms-Exch-Home-MDB-SL
ms-Exch-Home-MTA-SL
ms-Exch-Hosted-Content-Filter-Config-Link
ms-Exch-Hygiene-Configuration-Link
ms-Exch-Hygiene-Configuration-Malware-BL
ms-Exch-Hygiene-Configuration-Spam-BL
ms-Exch-IMAP-Throttling-Policy-State-Ex
ms-Exch-Immutable-Sid
ms-Exch-Internal-Maintenance-Critical
ms-Exch-Internal-Maintenance-Overloaded
ms-Exch-Internal-Maintenance-Underloaded
ms-Exch-Is-Dirsync-Status-Pending,
ms-Exch-Localization-Flags
ms-Exch-Mailbox-Database-Transport-Flags
ms-Exch-Mailbox-Move-Source-Archive-MDB-Link-SL
ms-Exch-Mailbox-Move-Source-MDB-Link-SL
ms-Exch-Mailbox-Move-Storage-MDB-Link-SL
ms-Exch-Mailbox-Move-Target-Archive-MDB-Link-SL
ms-Exch-Mailbox-Move-Target-MDB-Link-SL
ms-Exch-Mailflow-Policy-Countries
ms-Exch-Mailflow-Policy-Keywords
ms-Exch-Mailflow-Policy-Publisher-Name
ms-Exch-Mailflow-Policy-Transport-Rules-Template-Xml
ms-Exch-Mailflow-Policy-Version
ms-Exch-Malware-Filter-Config-Alert-Text
ms-Exch-Malware-Filter-Config-External-Body
ms-Exch-Malware-Filter-Config-External-Sender-Admin-Address
ms-Exch-Malware-Filter-Config-External-Subject
ms-Exch-Malware-Filter-Config-Flags
ms-Exch-Malware-Filter-Config-From-Address
ms-Exch-Malware-Filter-Config-From-Name
ms-Exch-Malware-Filter-Config-Internal-Body
ms-Exch-Malware-Filter-Config-Internal-Sender-Admin-Address
ms-Exch-Malware-Filter-Config-Internal-Subject
ms-Exch-Malware-Filter-Config-Link
ms-Exch-Malware-Filtering-Defer-Attempts
ms-Exch-Malware-Filtering-Defer-Wait-Time
ms-Exch-Malware-Filtering-Flags
ms-Exch-Malware-Filtering-Primary-Update-Path
ms-Exch-Malware-Filtering-Scan-Timeout
ms-Exch-Malware-Filtering-Secondary-Update-Path
ms-Exch-Malware-Filtering-Update-Frequency
ms-Exch-Malware-Filtering-Update-Timeout
ms-Exch-Management-Site-Link-SL
ms-Exch-MRS-Proxy-Flags
ms-Exch-MRS-Proxy-Max-Connections
ms-Exch-MSO-Forward-Sync-Divergence-Count
ms-Exch-MSO-Forward-Sync-Divergence-Related-Object-Link
ms-Exch-MSO-Forward-Sync-Divergence-Timestamp
ms-Exch-Multi-Mailbox-Databases-BL
ms-Exch-Multi-Mailbox-Databases-Link
ms-Exch-Multi-Mailbox-GUID
ms-Exch-Multi-Mailbox-Locations-BL
ms-Exch-Multi-Mailbox-Locations-Link
ms-Exch-OAB-Generating-Mailbox-BL
ms-Exch-OAB-Generating-Mailbox-Link
ms-Exch-Off-Line-AB-Server-SL
ms-Exch-Organization-Flags-2
ms-Exch-Organization-Upgrade-Policy-BL
ms-Exch-Organization-Upgrade-Policy-Date
ms-Exch-Organization-Upgrade-Policy-Enabled
ms-Exch-Organization-Upgrade-Policy-Link
ms-Exch-Organization-Upgrade-Policy-Link-SL
ms-Exch-Organization-Upgrade-Policy-MaxMailboxes
ms-Exch-Organization-Upgrade-Policy-Priority
ms-Exch-Organization-Upgrade-Policy-Source-Version
ms-Exch-Organization-Upgrade-Policy-Status
ms-Exch-Organization-Upgrade-Policy-Target-Version
ms-Exch-OWA-Set-Photo-URL
ms-Exch-OWA-Throttling-Policy-State-Ex
ms-Exch-POP-Throttling-Policy-State-Ex
ms-Exch-Powershell-Throttling-Policy-State-Ex
ms-Exch-Previous-Archive-Database
ms-Exch-Previous-Archive-Database-SL
ms-Exch-Previous-Home-MDB-SL
ms-Exch-Public-Folder-EntryId
ms-Exch-Public-Folder-Mailbox
ms-Exch-Public-Folder-Smtp-Address
ms-Exch-RCA-Throttling-Policy-State-Ex
ms-Exch-Recipient-SoftDeleted-Status
ms-Exch-Relocate-Tenant-Completion-Target-Vector
ms-Exch-Relocate-Tenant-Flags
ms-Exch-Relocate-Tenant-Safe-Lockdown-Schedule
ms-Exch-Relocate-Tenant-Source-Forest
ms-Exch-Relocate-Tenant-Start-Lockdown
ms-Exch-Relocate-Tenant-Start-Retired
ms-Exch-Relocate-Tenant-Start-Sync
ms-Exch-Relocate-Tenant-Status
ms-Exch-Relocate-Tenant-Target-Forest
ms-Exch-Relocate-Tenant-Transition-Counter
ms-Exch-Resource-Type
ms-Exch-RMS-Computer-Accounts-Link-SL
ms-Exch-RMSOnline-Certification-Location-Url
ms-Exch-RMSOnline-Key-Sharing-Location-Url
ms-Exch-RMSOnline-Licensing-Location-Url
ms-Exch-RoleGroup-Type
ms-Exch-Service-End-Point-URL
ms-Exch-Shadow-When-Soft-Deleted-Time
ms-Exch-Spam-Add-Header
ms-Exch-Spam-Asf-Settings
ms-Exch-Spam-Asf-Test-Bcc-Address
ms-Exch-Spam-Country-Block-List
ms-Exch-Spam-Digest-Frequency
ms-Exch-Spam-False-Positive-Cc
ms-Exch-Spam-Flags
ms-Exch-Spam-Language-Block-List
ms-Exch-Spam-Modify-Subject
ms-Exch-Spam-Notify-Outbound-Recipients
ms-Exch-Spam-Outbound-Spam-Cc
ms-Exch-Spam-Quarantine-Retention
ms-Exch-Spam-Redirect-Address
ms-Exch-Sts-Refresh-Tokens-Valid-From
ms-Exch-Sync-Cookie
ms-Exch-Sync-Service-Instance-New-Tenant-Max-Version
ms-Exch-Sync-Service-Instance-New-Tenant-Min-Version
ms-Exch-Team-Mailbox-Expiration
ms-Exch-Team-Mailbox-Expiry-Days
ms-Exch-Team-Mailbox-Owners
ms-Exch-Team-Mailbox-SharePoint-Linked-By
ms-Exch-Team-Mailbox-SharePoint-Url
ms-Exch-Team-Mailbox-Show-In-Client-List
ms-Exch-Tenant-Country
ms-Exch-Throttling-Policy-Flags
ms-Exch-Transport-MaxRetriesForLocalSiteShadow
ms-Exch-Transport-MaxRetriesForRemoteSiteShadow
ms-Exch-Transport-Reseller-Settings-Link-SL
ms-Exch-Transport-Rule-Immutable-Id
ms-Exch-Trusted-Domain-BL
ms-Exch-Trusted-Domain-Link
ms-Exch-UG-Event-Subscription-BL
ms-Exch-UG-Event-Subscription-Link
ms-Exch-UG-Member-BL
ms-Exch-UG-Member-Link
ms-Exch-Urgent-Critical
ms-Exch-Urgent-Overloaded
ms-Exch-Urgent-Underloaded
ms-Exch-WAC-Discovery-Endpoint
ms-Exch-When-Soft-Deleted-Time
ms-Exch-Workload-Classification
ms-Exch-Workload-Management-Is-Enabled
ms-Exch-Workload-Management-Policy
ms-Exch-Workload-Management-Policy-BL
ms-Exch-Workload-Management-Policy-Link

Global catalog attributes added by Exchange 2019 RTM

ms-Exch-Administrative-Unit-BL
ms-Exch-Administrative-Unit-Link
ms-Exch-Archive-Database-Link-SL
ms-Exch-Auth-Policy-Link
ms-Exch-Correlation-Id
ms-Exch-Data-Encryption-Policy-BL
ms-Exch-Data-Encryption-Policy-Link
ms-Exch-Default-Public-Folder-Mailbox
ms-Exch-Device-Client-Type
ms-Exch-Dirsync-Authority-Metadata
ms-Exch-Dirsync-Status
ms-Exch-Dirsync-Status-Ack
ms-Exch-Disabled-Archive-Database-Link-SL
ms-Exch-Edge-Sync-Config-Flags
ms-Exch-EvictedMembers-Link
ms-Exch-EvictedMembers-BL
ms-Exch-Extension-Custom-Attribute-1
ms-Exch-Extension-Custom-Attribute-2
ms-Exch-Extension-Custom-Attribute-3
ms-Exch-Extension-Custom-Attribute-4
ms-Exch-Extension-Custom-Attribute-5
ms-Exch-Group-External-Member-Count
ms-Exch-Group-Member-Count
ms-Exch-HAB-Root-DepaPreviewent-Link
ms-Exch-Home-MDB-SL
ms-Exch-Home-MTA-SL
ms-Exch-Is-Dirsync-Status-Pending
ms-Exch-Localization-Flags
ms-Exch-Mailbox-Container-Guid
ms-Exch-Mailbox-Move-Source-Archive-MDB-Link-SL
ms-Exch-Mailbox-Move-Source-MDB-Link-SL
ms-Exch-Mailbox-Move-Storage-MDB-Link-SL
ms-Exch-Mailbox-Move-Target-Archive-MDB-Link-SL
ms-Exch-Mailbox-Move-Target-MDB-Link-SL
ms-Exch-Offline-OrgId-Home-Realm-Record
ms-Exch-Previous-Archive-Database
ms-Exch-Previous-Archive-Database-SL
ms-Exch-Previous-Home-MDB-SL
ms-Exch-Recipient-SoftDeleted-Status
ms-Exch-Relocate-Tenant-Completion-Target-Vector,
ms-Exch-Relocate-Tenant-Flags
ms-Exch-Relocate-Tenant-Safe-Lockdown-Schedule
ms-Exch-Relocate-Tenant-Source-Forest
ms-Exch-Relocate-Tenant-Start-Lockdown
ms-Exch-Relocate-Tenant-Start-Retired
ms-Exch-Relocate-Tenant-Start-Sync
ms-Exch-Relocate-Tenant-Status
ms-Exch-Relocate-Tenant-Target-Forest
ms-Exch-Relocate-Tenant-Transition-Counter
ms-Exch-RMS-Computer-Accounts-Link-SL
ms-Exch-RoleGroup-Type
ms-Exch-Sync-Cookie
ms-Exch-Team-Mailbox-Expiration
ms-Exch-Team-Mailbox-Expiry-Days
ms-Exch-Team-Mailbox-Owners
ms-Exch-Team-Mailbox-SharePoint-Linked-By
ms-Exch-Team-Mailbox-SharePoint-Url
ms-Exch-Team-Mailbox-Show-In-Client-List
ms-Exch-UG-Event-Subscription-BL
ms-Exch-UG-Event-Subscription-Link
ms-Exch-Unified-Mailbox
`ms-Exch-When-Soft-Deleted-Time

Attributes modified by Exchange 2019 RTM

Class	Change	Attribute/Class
`Exch-Configuration-Unit-Container`	`rangeUpper`	15254
`Exch-Mailflow-Policy-Transport-Rules-Template-Xml`	`rangeUpper`	256000
`Mail-Recipient`	Replace: `mayContain`	`msExchUGMemberLink`
`ms-Exch-Accepted-Domain-Name`	replace: `searchFlags`	9
`ms-Exch-Archive-GUID`	replace: `searchFlags`	9
`ms-Exch-Bypass-Audit`	replace: `searchFlags`	19
`ms-Exch-Coexistence-On-Premises-Smart-Host`	`ntdsSchemaAdd`	`attributeID: 1.2.840.113556.1.4.7000.102.51992 isMemberOfPartialAttributeSet: FALSE` (not in global catalog) `searchFlags: 0` (no index)
`ms-Exch-Coexistence-Secure-Mail-Certificate-Thumbprint`	`ntdsSchemaAdd`	`attributeID: 1.2.840.113556.1.4.7000.102.51991 isMemberOfPartialAttributeSet: FALSE` (not in global catalog) `searchFlags: 0` (no index)
`ms-Exch-Coexistence-Secure-Mail-Certificate-Thumbprintms-Exch-Sync-Cookie`	`rangeUpper`	1024
`ms-Exch-Coexistence-Transport-Servers`	`ntdsSchemaAdd`	`attributeID: 1.2.840.113556.1.4.7000.102.51990 isMemberOfPartialAttributeSet: FALSE` (not in global catalog) `searchFlags: 0` (no index)
`ms-Exch-ELC-Mailbox-Flags`	replace: `attributeSecurityGuid`	`F6SzsVXskUGzJ7cuM+OK8g==`
`ms-Exch-Extension-Custom-Attribute-1`	`isMemberOfPartialAttributeSet:`	`TRUE`
`ms-Exch-Extension-Custom-Attribute-2`	`isMemberOfPartialAttributeSet:`	`TRUE`
`ms-Exch-Extension-Custom-Attribute-3`	`isMemberOfPartialAttributeSet:`	`TRUE`
`ms-Exch-Extension-Custom-Attribute-4`	`isMemberOfPartialAttributeSet:`	`TRUE`
`ms-Exch-Extension-Custom-Attribute-5`	`isMemberOfPartialAttributeSet`	`TRUE`
`ms-Exch-Group-External-Member-Count`	`ntdsSchemaModify`	`isMemberOfPartialAttributeSet: TRUE MAPIID:36066`
`ms-Exch-Group-Member-Count`	`ntdsSchemaModify`	replace: `isMemberOfPartialAttributeSetisMemberOfPartialAttributeSet: TRUE MAPIID: 36067`
`ms-Exch-Group-Security-Flags`	`ntdsSchemaModify`	replace: `mapiId: 36111`
`ms-Exch-HAB-Root-DepaPreviewent-Link`	replace: `isMemberOfPartialAttributeSet`	`TRUE`
`ms-Exch-Mailbox-Audit-Enable`	replace: `searchFlags`	19
`ms-Exch-Malware-Filtering-Update-Frequency`	`rangeUpper`	38880
`ms-Exch-MSO-Forward-Sync-Non-Recipient-Cookie`	`rangeUpper`	20480
`ms-Exch-MSO-Forward-Sync-Recipient-Cookie`	`rangeUpper`	20480
`ms-Exch-Role-Entries`	`rangeUpper`	8192
`ms-Exch-Schema-Version-Pt`	`rangeUpper`	15137
`ms-Exch-Schema-Version-Pt`	`rangeUpper`	15281
`Ms-exch-schema-version-pt`	`rangeUpper`	15292
`ms-Exch-Smtp-Receive-Tls-Certificate-Name`	Replace: `rangeUpper`	1024
`ms-Exch-Smtp-TLS-Certificate`	replace: `rangeUpper`	1024
`ms-Exch-Sync-Cookie`	`rangeUpper`	262144
`Top`	Replace: `mayContain`	`msExchUGMemberBL`

Object IDs added by Exchange 2019 RTM

The following class object IDs are added when you install Exchange 2019 RTM:

1.2.840.113556.1.5.7000.62.50161
1.2.840.113556.1.5.7000.62.50162
1.2.840.113556.1.5.7000.62.50163
1.2.840.113556.1.5.7000.62.50164
1.2.840.113556.1.5.7000.62.50165
1.2.840.113556.1.5.7000.62.50166
1.2.840.113556.1.5.7000.62.50167
1.2.840.113556.1.5.7000.62.50170
1.2.840.113556.1.5.7000.62.50171
1.2.840.113556.1.5.7000.62.50172
1.2.840.113556.1.5.7000.62.50173
1.2.840.113556.1.5.7000.62.50174
1.2.840.113556.1.5.7000.62.50176
1.2.840.113556.1.5.7000.62.50177
1.2.840.113556.1.5.7000.62.50178
1.2.840.113556.1.5.7000.62.50187
1.2.840.113556.1.5.7000.62.50188
1.2.840.113556.1.5.7000.62.50189
1.2.840.113556.1.5.7000.62.50190
1.2.840.113556.1.5.7000.62.50191
1.2.840.113556.1.5.7000.62.50192
1.2.840.113556.1.5.7000.62.50202
1.2.840.113556.1.5.7000.62.50203
1.2.840.113556.1.5.7000.62.50204
1.2.840.113556.1.5.7000.62.50205
1.2.840.113556.1.5.7000.62.50212
1.2.840.113556.1.5.7000.62.50213
1.2.840.113556.1.5.7000.62.50214

The following attribute object IDs are added when you install Exchange 2019 RTM:

1.2.840.113556.1.4.2183
1.2.840.113556.1.4.2184
1.2.840.113556.1.4.2185
1.2.840.113556.1.4.7000.102.51773
1.2.840.113556.1.4.7000.102.51774
1.2.840.113556.1.4.7000.102.51775
1.2.840.113556.1.4.7000.102.51786
1.2.840.113556.1.4.7000.102.51787
1.2.840.113556.1.4.7000.102.51788
1.2.840.113556.1.4.7000.102.51789
1.2.840.113556.1.4.7000.102.51790
1.2.840.113556.1.4.7000.102.51791
1.2.840.113556.1.4.7000.102.51792
1.2.840.113556.1.4.7000.102.51794
1.2.840.113556.1.4.7000.102.51795
1.2.840.113556.1.4.7000.102.51796
1.2.840.113556.1.4.7000.102.51797
1.2.840.113556.1.4.7000.102.51798
1.2.840.113556.1.4.7000.102.51799
1.2.840.113556.1.4.7000.102.51800
1.2.840.113556.1.4.7000.102.51801
1.2.840.113556.1.4.7000.102.51805
1.2.840.113556.1.4.7000.102.51806
1.2.840.113556.1.4.7000.102.51807
1.2.840.113556.1.4.7000.102.51808
1.2.840.113556.1.4.7000.102.51809
1.2.840.113556.1.4.7000.102.51810
1.2.840.113556.1.4.7000.102.51811
1.2.840.113556.1.4.7000.102.51812
1.2.840.113556.1.4.7000.102.51813
1.2.840.113556.1.4.7000.102.51814
1.2.840.113556.1.4.7000.102.51815
1.2.840.113556.1.4.7000.102.51816
1.2.840.113556.1.4.7000.102.51818
1.2.840.113556.1.4.7000.102.51819
1.2.840.113556.1.4.7000.102.51820
1.2.840.113556.1.4.7000.102.51821
1.2.840.113556.1.4.7000.102.51822
1.2.840.113556.1.4.7000.102.51823
1.2.840.113556.1.4.7000.102.51824
1.2.840.113556.1.4.7000.102.51826
1.2.840.113556.1.4.7000.102.51827
1.2.840.113556.1.4.7000.102.51829
1.2.840.113556.1.4.7000.102.51830
1.2.840.113556.1.4.7000.102.51832
1.2.840.113556.1.4.7000.102.51833
1.2.840.113556.1.4.7000.102.51836
1.2.840.113556.1.4.7000.102.51837
1.2.840.113556.1.4.7000.102.51838
1.2.840.113556.1.4.7000.102.51839
1.2.840.113556.1.4.7000.102.51840
1.2.840.113556.1.4.7000.102.51851
1.2.840.113556.1.4.7000.102.51852
1.2.840.113556.1.4.7000.102.51859
1.2.840.113556.1.4.7000.102.51860
1.2.840.113556.1.4.7000.102.51861
1.2.840.113556.1.4.7000.102.51862
1.2.840.113556.1.4.7000.102.51863
1.2.840.113556.1.4.7000.102.51864
1.2.840.113556.1.4.7000.102.51865
1.2.840.113556.1.4.7000.102.51866
1.2.840.113556.1.4.7000.102.51867
1.2.840.113556.1.4.7000.102.51868
1.2.840.113556.1.4.7000.102.51869
1.2.840.113556.1.4.7000.102.51870
1.2.840.113556.1.4.7000.102.51871
1.2.840.113556.1.4.7000.102.51872
1.2.840.113556.1.4.7000.102.51873
1.2.840.113556.1.4.7000.102.51874
1.2.840.113556.1.4.7000.102.51875
1.2.840.113556.1.4.7000.102.51876
1.2.840.113556.1.4.7000.102.51877
1.2.840.113556.1.4.7000.102.51878
1.2.840.113556.1.4.7000.102.51879
1.2.840.113556.1.4.7000.102.51880
1.2.840.113556.1.4.7000.102.51881
1.2.840.113556.1.4.7000.102.51882
1.2.840.113556.1.4.7000.102.51883
1.2.840.113556.1.4.7000.102.51914
1.2.840.113556.1.4.7000.102.51915
1.2.840.113556.1.4.7000.102.51916
1.2.840.113556.1.4.7000.102.51917
1.2.840.113556.1.4.7000.102.51918
1.2.840.113556.1.4.7000.102.51919
1.2.840.113556.1.4.7000.102.51920
1.2.840.113556.1.4.7000.102.51921
1.2.840.113556.1.4.7000.102.51922
1.2.840.113556.1.4.7000.102.51923
1.2.840.113556.1.4.7000.102.51924
1.2.840.113556.1.4.7000.102.51925
1.2.840.113556.1.4.7000.102.51926
1.2.840.113556.1.4.7000.102.51927
1.2.840.113556.1.4.7000.102.51928
1.2.840.113556.1.4.7000.102.51929
1.2.840.113556.1.4.7000.102.51930
1.2.840.113556.1.4.7000.102.51931
1.2.840.113556.1.4.7000.102.51932
1.2.840.113556.1.4.7000.102.51933
1.2.840.113556.1.4.7000.102.51934
1.2.840.113556.1.4.7000.102.51935
1.2.840.113556.1.4.7000.102.51936
1.2.840.113556.1.4.7000.102.51937
1.2.840.113556.1.4.7000.102.51938
1.2.840.113556.1.4.7000.102.51939
1.2.840.113556.1.4.7000.102.51940
1.2.840.113556.1.4.7000.102.51941
1.2.840.113556.1.4.7000.102.51942
1.2.840.113556.1.4.7000.102.51943
1.2.840.113556.1.4.7000.102.51944
1.2.840.113556.1.4.7000.102.51945
1.2.840.113556.1.4.7000.102.51946
1.2.840.113556.1.4.7000.102.51947
1.2.840.113556.1.4.7000.102.51948
1.2.840.113556.1.4.7000.102.51949
1.2.840.113556.1.4.7000.102.51950
1.2.840.113556.1.4.7000.102.51951
1.2.840.113556.1.4.7000.102.51952
1.2.840.113556.1.4.7000.102.51953
1.2.840.113556.1.4.7000.102.51954
1.2.840.113556.1.4.7000.102.51955
1.2.840.113556.1.4.7000.102.51993
1.2.840.113556.1.4.7000.102.51994
1.2.840.113556.1.4.7000.102.51995
1.2.840.113556.1.4.7000.102.51996
1.2.840.113556.1.4.7000.102.51997
1.2.840.113556.1.4.7000.102.51998
1.2.840.113556.1.4.7000.102.52001
1.2.840.113556.1.4.7000.102.52002
1.2.840.113556.1.4.7000.102.52003
1.2.840.113556.1.4.7000.102.52004
1.2.840.113556.1.4.7000.102.52005
1.2.840.113556.1.4.7000.102.52006
1.2.840.113556.1.4.7000.102.52007
1.2.840.113556.1.4.7000.102.52008
1.2.840.113556.1.4.7000.102.52011
1.2.840.113556.1.4.7000.102.52012
1.2.840.113556.1.4.7000.102.52013
1.2.840.113556.1.4.7000.102.52014
1.2.840.113556.1.4.7000.102.52015
1.2.840.113556.1.4.7000.102.52016
1.2.840.113556.1.4.7000.102.52017
1.2.840.113556.1.4.7000.102.52018
1.2.840.113556.1.4.7000.102.52019
1.2.840.113556.1.4.7000.102.52020
1.2.840.113556.1.4.7000.102.52021
1.2.840.113556.1.4.7000.102.52022
1.2.840.113556.1.4.7000.102.52023
1.2.840.113556.1.4.7000.102.52024
1.2.840.113556.1.4.7000.102.52029
1.2.840.113556.1.4.7000.102.52030
1.2.840.113556.1.4.7000.102.52031
1.2.840.113556.1.4.7000.102.52032
1.2.840.113556.1.4.7000.102.52033
1.2.840.113556.1.4.7000.102.52034
1.2.840.113556.1.4.7000.102.52035
1.2.840.113556.1.4.7000.102.52036
1.2.840.113556.1.4.7000.102.52037
1.2.840.113556.1.4.7000.102.52039
1.2.840.113556.1.4.7000.102.52040
1.2.840.113556.1.4.7000.102.52041
1.2.840.113556.1.4.7000.102.52042
1.2.840.113556.1.4.7000.102.52043
1.2.840.113556.1.4.7000.102.52044
1.2.840.113556.1.4.7000.102.52045
1.2.840.113556.1.4.7000.102.52046
1.2.840.113556.1.4.7000.102.52047
1.2.840.113556.1.4.7000.102.52048
1.2.840.113556.1.4.7000.102.52049
1.2.840.113556.1.4.7000.102.52050
1.2.840.113556.1.4.7000.102.52051
1.2.840.113556.1.4.7000.102.52052
1.2.840.113556.1.4.7000.102.52053
1.2.840.113556.1.4.7000.102.52054
1.2.840.113556.1.4.7000.102.52055
1.2.840.113556.1.4.7000.102.52056
1.2.840.113556.1.4.7000.102.52057
1.2.840.113556.1.4.7000.102.52058
1.2.840.113556.1.4.7000.102.52059
1.2.840.113556.1.4.7000.102.52060
1.2.840.113556.1.4.7000.102.52061
1.2.840.113556.1.4.7000.102.52062
1.2.840.113556.1.4.7000.102.52063
1.2.840.113556.1.4.7000.102.52064
1.2.840.113556.1.4.7000.102.52065
1.2.840.113556.1.4.7000.102.52109
1.2.840.113556.1.4.7000.102.52110
1.2.840.113556.1.4.7000.102.52126
1.2.840.113556.1.4.7000.102.52127
1.2.840.113556.1.4.7000.102.52128
1.2.840.113556.1.4.7000.102.52129
1.2.840.113556.1.4.7000.102.52130
1.2.840.113556.1.4.7000.102.52151
1.2.840.113556.1.4.7000.102.52152
1.2.840.113556.1.4.7000.102.52155
1.2.840.113556.1.4.7000.102.52156
1.2.840.113556.1.4.7000.102.52157
1.2.840.113556.1.4.7000.102.52158
1.2.840.113556.1.4.7000.102.52159
1.2.840.113556.1.4.7000.102.52160
1.2.840.113556.1.4.7000.102.52161

Indexed attributes added by Exchange 2019 RTM

Attribute	Search flag value
`ms-DS-GeoCoordinates-Altitude`	1
`ms-DS-GeoCoordinates-Latitude`	1
`ms-DS-GeoCoordinates-Longitude`	1
`ms-Exch-Accepted-Domain-Name`	9
`ms-Exch-Archive-GUID`	9
`ms-Exch-Auth-Application-Identifier`	1
`ms-Exch-Auth-Issuer-Name`	1
`ms-Exch-Bypass-Audit`	9
`ms-Exch-Data-Encryption-Policy-Link`	1
`ms-Exch-Default-Public-Folder-Mailbox`	19
`ms-Exch-Device-Client-Type`	1
`ms-Exch-Extension-Custom-Attribute-1`	1
`ms-Exch-Extension-Custom-Attribute-2`	1
`ms-Exch-Extension-Custom-Attribute-3`	1
`ms-Exch-Extension-Custom-Attribute-4`	1
`ms-Exch-Extension-Custom-Attribute-5`	1
`ms-Exch-Home-MDB-SL`	1
`ms-Exch-Home-MTA-SL`	1
`ms-Exch-Is-Dirsync-Status-Pending`	1
`ms-Exch-Mailbox-Audit-Enable`	19
`ms-Exch-Mailbox-Database-Transport-Flags`	16
`ms-Exch-Mailbox-Move-Source-Archive-MDB-Link-SL`	1
`ms-Exch-Mailbox-Move-Source-MDB-Link-SL`	1
`ms-Exch-Mailbox-Move-Target-Archive-MDB-Link-SL`	1
`ms-Exch-Organization-Upgrade-Policy-Link`	1
`ms-Exch-Organization-Upgrade-Policy-Link-SL`	1
`ms-Exch-OWA-Set-Photo-URL`	16
`ms-Exch-Previous-Archive-Database-SL`	8
`ms-Exch-Previous-Home-MDB-SL`	8
`ms-Exch-Provisioning-Tags`	1
`ms-Exch-Public-Folder-EntryId`	24
`ms-Exch-Public-Folder-Mailbox`	24
`ms-Exch-Public-Folder-Smtp-Address`	24
`ms-Exch-Recipient-SoftDeleted-Status`	27
`ms-Exch-Relocate-Tenant-Completion-Target-Vector`	8
`ms-Exch-Relocate-Tenant-Flags`	8
`ms-Exch-Relocate-Tenant-Safe-Lockdown-Schedule`	8
`ms-Exch-Relocate-Tenant-Source-Forest`	9
`ms-Exch-Relocate-Tenant-Start-Lockdown`	8
`ms-Exch-Relocate-Tenant-Start-Retired`	8
`ms-Exch-Relocate-Tenant-Start-Sync`	8
`ms-Exch-Relocate-Tenant-Status,`	9
`ms-Exch-Relocate-Tenant-Target-Forest`	9
`ms-Exch-Relocate-Tenant-Transition-Counter`	8
`ms-Exch-Sync-Cookie`	8
`ms-Exch-Team-Mailbox-Expiration`	16
`ms-Exch-Team-Mailbox-Expiry-Days`	16
`ms-Exch-Team-Mailbox-Owners`	16
`ms-Exch-Team-Mailbox-SharePoint-Linked-By`	16
`ms-Exch-Team-Mailbox-SharePoint-Url`	16
`ms-Exch-Team-Mailbox-Show-In-Client-List`	16
`ms-Exch-Transport-Rule-Immutable-Id`	1
`ms-Exch-When-Soft-Deleted-Time`	17

Property sets modified by Exchange 2019 RTM

The following property sets are modified when you install Exchange 2019 RTM:

Exchange-Information

MAPI IDs added by Exchange 2019 RTM

The following MAPI IDs are added when you install Exchange 2019 RTM:

36066
36067

Extended rights added by Exchange 2019 RTM

The following table lists the extended rights that are added when you install Exchange 2019 RTM. Installing Exchange 2019 RTM doesn't modify any existing extended rights.

Identifier	Values
`CN=ms-Exch-SMTP-Accept-XProxyFrom,CN=Extended-Rights,<ConfigurationContainerDN>`	`changetype: ntdsSchemaAdddisplayName: Accept XProxyFromobjectClass: controlAccessRightrightsGuid: 5bee2b72-50d7-49c7-ba66-39a25daa1e92validAccesses: 256`

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