2,459 questions with Exchange | Hybrid management tags

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Synced users provisioning to Exchange online issues

Hello, We are currently working on a project to migrate users from an on-premises Exchange Server to Microsoft 365 / Exchange Online. We have configured Microsoft Entra Connect with Exchange hybrid synchronization enabled, and we have configured a…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-09-24T15:27:46.1866667+00:00
John 20 Reputation points
commented 2026-09-25T14:42:06.3733333+00:00
Jay1 Tran 1,285 Reputation points Independent Advisor
1 answer One of the answers was accepted by the question author.

Enchange 2010 to Exchange Online migration - Migrating mailboxes used by applications

Hello, We are migrating an Exchange Server 2010 to Exchange Online. All user mailboxes were already migrated. There are 10 mailboxes that were used by server applications, using a Receive Connector with IP addresses cofigured for every source server.…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,415 questions
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

8,202 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2020-11-26T22:11:29.267+00:00
Cristian Ruiz 191 Reputation points
commented 2026-09-24T21:20:54.1633333+00:00
Herald Johnson 0 Reputation points
1 answer One of the answers was accepted by the question author.

Exchange online migration

First time I work with exchange online, where I need to migrate a user account that today has a IMAP account. So overall I just look for best practise. Overall I need to change the MX record to point to Exchange online.  Then I need to migrate the imap…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,415 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2024-10-09T00:27:04.01+00:00
Anthony-123 380 Reputation points
answered 2026-09-24T21:10:50.2566667+00:00
Herald Johnson 0 Reputation points
1 answer

Unable to accept shared calendar invitations from Exchange On-Premises to Exchange Online in a hybrid environment

Hello, We are experiencing an issue with calendar sharing in our Exchange hybrid environment (Exchange On-Premises and Exchange Online). Problem description An Exchange On-Premises user creates a secondary calendar and shares it with colleagues whose…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-09-24T08:12:36.2433333+00:00
Stadelmann, Enzo 0 Reputation points
commented 2026-09-24T09:26:50.1966667+00:00
Stadelmann, Enzo 0 Reputation points
2 answers

Exchange 2016 Hybrid OAuth to Exchange Online EWS failing with 403 after HCW rerun

We are working on completing an Exchange hybrid migration/decommission project and are blocked by an OAuth issue. Environment: Exchange Server 2016 CU23 Build 15.01.2507.061 Single on-prem Exchange server Hybrid with Exchange Online HCW was rerun…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-07-17T16:32:00.8533333+00:00
Shawn Alston 0 Reputation points
answered 2026-09-21T23:17:17.3833333+00:00
Ceyhun KIRMIZITAS 0 Reputation points Microsoft External Staff
3 answers

Transport rule for messages outside the organization are trigered for migrated mailboxes outgoing mail

Hello. Running into an issue: (1) Mail destined to outside the organization from a migrated mailbox to online, triggers a transport rule that is configured for incoming emails from outside the organization ("Caution: this email is from outside of…

Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

8,202 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2022-04-06T17:17:59.96+00:00
Jesus Urbina 1 Reputation point
edited an answer 2026-09-21T21:38:53.25+00:00
Ceyhun KIRMIZITAS 0 Reputation points Microsoft External Staff
5 answers One of the answers was accepted by the question author.

Exchange Hybrid Migration Queries

I've started migrating mailboxes from our on prem Exch 2019 hybrid environment up to Exchange Online. So far so good with the actual migrations, all has gone smoothly as expected. I've noted a few anomalies post migration I wasn't expecting…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,415 questions
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

8,202 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2022-09-01T12:49:21.693+00:00
Matthew Pollock 256 Reputation points
edited an answer 2026-09-21T21:38:20.7066667+00:00
Ceyhun KIRMIZITAS 0 Reputation points Microsoft External Staff
2 answers One of the answers was accepted by the question author.

renewing Microsoft Exchange Server Auth Certificate in hybrid Exchange Serverhy 2019

Dears, I Have hybrid Exchange Server 2019 in my environment, last week my Microsoft Exchange Server Auth Certificate has expired and ECP/OWA stopped from working, so I renewed the certificate by using these commands: [PS] C:>New-ExchangeCertificate…

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other

A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.

1,651 questions
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

8,202 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2024-03-06T10:50:28.88+00:00
Ibrahim AlHusari 191 Reputation points
edited an answer 2026-09-21T21:31:22.7833333+00:00
Ceyhun KIRMIZITAS 0 Reputation points Microsoft External Staff
3 answers

Exchange Hybrid Wizard Setup, Follow Up Setup

Exchange 2019 Cu14. Working on migrating to Exchange online. The goal is to enable Entra connect, migrate Exchange to the cloud, end Entra connect, and manage the cloud/local AD separately. When running the Exchange Hybrid Wizard, what all is configured…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-09-14T22:32:52.39+00:00
Susan Dodds 421 Reputation points
commented 2026-09-16T22:06:56.9733333+00:00
Jay1 Tran 1,285 Reputation points Independent Advisor
1 answer

Exchange On-Premises to Multiple Exchange Online Tenants Migration - Guidance Required for Multi-Entity Mailbox Design

Hello Experts, URGENT!! We are planning a migration from a centralized Exchange On-Premises environment to Microsoft Exchange Online, where each business entity will have its own independent Microsoft 365 tenant. Current Environment The organization…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-09-13T17:44:35.5433333+00:00
Muhammad Adeeb 0 Reputation points
commented 2026-09-15T10:42:34.4066667+00:00
Hani-Ng 1,655 Reputation points Independent Advisor
2 answers

Exchange Online Mailbox Deprovisioning Behavior

We would like clarification regarding the current mailbox deprovisioning behavior in our Hybrid Exchange environment. Historically, when a user was terminated, we would: Disable the account in on-premises Active Directory. Remove all Microsoft 365…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-09-03T09:24:53.0066667+00:00
Aslanidis Athanasios 0 Reputation points
edited the question 2026-09-04T13:52:37.7066667+00:00
Daniel-Vo 6,450 Reputation points Microsoft External Staff Moderator
2 answers

Exchange Admin - Migration Endpoints are Missing / not showing

Hello Guys, were running Hybrid Exchange Environment. Since last Week im no longer able to load our Migration Endpoints. https://admin.cloud.microsoft/exchange#/migrationbatch I got the Role "Exchange Admin" and cant see the Endpoints. My…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-09-04T07:43:37.52+00:00
Bantha 0 Reputation points
commented 2026-09-04T11:09:16.6533333+00:00
Bantha 0 Reputation points
4 answers

Missing movable holidays (Easter-based holidays) in Outlook calendar for 2027 across multiple Microsoft 365 tenants

We are experiencing a consistent issue across multiple Microsoft 365 tenants and organizations. In Outlook (desktop) and Outlook on the web, holidays for 2027 are partially missing. Fixed public holidays (such as Christmas and New Year) are displayed…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-06-16T13:05:03.3533333+00:00
S 5 Reputation points
answered 2026-09-03T12:32:00.4766667+00:00
Heinle Markus 5 Reputation points
3 answers

Exchange Online - SMTP Relay for Onpremise Systems

Hello everyone, Since Microsoft has announced that it will soon deactivate the legacy SMTP protocol (including SMTP authentication), I am faced with the question of how on-premise systems can continue to send emails. Specifically, the situation is as…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2024-11-25T14:26:24.1866667+00:00
SQIT 0 Reputation points
answered 2026-08-25T12:02:20.0333333+00:00
Andreas Hähnel 0 Reputation points
1 answer

.com NETBIOS

We are trying to move to Entra ID but have a .com NETBIOS name with a 2019 Exchange on prem. Has anyone else experienced this and been able to move forward without creating a new domain?

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-08-13T00:57:55.04+00:00
Rick 0 Reputation points
commented 2026-08-17T03:26:22.63+00:00
Elena-VH 1,810 Reputation points Independent Advisor
1 answer

Is there a supported Exchange Hybrid procedure to convert the existing remote mailbox/user mailbox to a MailUser while retaining the existing mailbox content under Litigation Hold?

Is there a supported Exchange Hybrid procedure to convert the existing remote mailbox/user mailbox to a MailUser while retaining the existing mailbox content under Litigation Hold? If this combination is not supported, could you please clarify: Which…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-08-10T13:26:39.9333333+00:00
Kumar, Deepak 0 Reputation points
answered 2026-08-10T15:15:09.76+00:00
Heimerdinger 630 Reputation points Independent Advisor
1 answer One of the answers was accepted by the question author.

Exchange HCW using 2 Exchange 2016 edge servers (stmp1.domain.com and smtp2.domain.com)

Hi All, Looking for some Exchange hybrid configuration wizard guidance. Scenario: EWS published using hybrid.domain.com 2x Edge Servers configured using dedicated FQDNs - edge1.domain.com and edge2.domain.com If I want high availability for SMTP/Edge…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,415 questions
Exchange | Exchange Server | Other
Exchange | Exchange Server | Other

A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.

1,651 questions
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

8,202 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2023-01-11T10:53:10.8+00:00
Azhar Pasha Syed 40 Reputation points
accepted 2026-08-07T01:37:06.96+00:00
Azhar Pasha Syed 40 Reputation points
3 answers

we are in hybrid setup how to change the domain name and change users email address

we are in hybrid setup how to change the domain name and change user's email address which is best way to migrate the users without impact anything.

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-08-05T05:46:07.35+00:00
Doddabasappa K 25 Reputation points
edited a comment 2026-08-05T23:09:11.45+00:00
Dora-T 1,050 Reputation points Independent Advisor
1 answer

Exchange Online automatic forwarding no longer preserves forwarded recipient in Microsoft Graph or MIME headers

Hello Microsoft Team, We have a SaaS application that receives emails through Exchange Online mailbox forwarding. Our routing logic depends on identifying the forwarded recipient address (for example ******@evisionits.com) from the message received in…

Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2026-08-04T12:00:40.9966667+00:00
Abhi Dashadiya 5 Reputation points
commented 2026-08-05T14:07:00.9066667+00:00
Kristen Tran 1,870 Reputation points Independent Advisor
3 answers

Duplicates are being imported

Hello, I am using the New-MailboxImportRequest to import .PST files into existing mailboxes. These mailboxes have emails in them that are also included in the .PST file being imported. The import request completes successfully, some needing the…

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.

7,415 questions
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

8,202 questions
Exchange | Hybrid management
Exchange | Hybrid management

The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.

2,459 questions
asked 2021-06-22T01:42:59.563+00:00
LeighHarding 1 Reputation point
answered 2026-07-31T14:31:46.2666667+00:00
Ted Mittelstaedt 61 Reputation points