No Emails on Exchange

Hi @Arthur Rooks 

I’m sorry to hear about the difficulties you’re experiencing with your Exchange account. I understand how stressful it can be when email access is disrupted, especially since you mentioned issues with receiving mail, reinstalling Outlook, and login errors. 

From your description, the issue is related to Exchange Online (Microsoft‑hosted Exchange), which means you’re using a work or school account rather than a personal Outlook.com account. In this scenario, support is typically handled through your organization’s administrator in the Microsoft 365 Admin Center. Under most Microsoft 365 business subscriptions, raising a support request through the admin center does not require additional payment.  

Could you please help clarify the following: 

• Are you an administrator for your Microsoft 365 tenant? 
• If yes, have you already raised a support ticket through the Microsoft 365 Admin Center? 
• When you mentioned that support is asking you to pay, could you share which support channel you contacted so far?   

Since this is a user‑to‑user forum, moderators and contributors including external Microsoft employees cannot directly access accounts or back‑end systems. What we can do here is guide you with troubleshooting steps and help narrow down the issue.  

Here are some steps you may try: 

• Please verify whether you can access your mailbox via Outlook on the web (https://outlook.office.com). This will help determine if the issue is service-related or client-specific. 
• If you are not the admin, please contact your organization’s IT administrator to confirm that your account is still active and licensed.  
• If you are the admin, check that the affected accounts have the correct licenses assigned in the Microsoft 365 Admin Center.  

To make sure I fully understand your situation: 

• Are you signing in with a personal Microsoft account (for example, @outlook.com or @hotmail.com) or with a work/school account?   
• What type of account is configured in Outlook (POP, IMAP, or Exchange)?   

Please know that while our initial response might not resolve the issue right away, your input is incredibly valuable. With a bit more detail, we’ll work together to find the best solution for you.  

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.   

Hello, Earth to Microsoft. Is anybody there or everybody is home with COVID.

Just Sue Microsoft for not wanting to help. There Exchange Server is down and Them do not want to be brothered. We are back in COVID Again Microsoft is dead and nobody answers the phone. Sueing Microsoft will be fun.

The described symptoms involve two separate issues: not receiving email on an Exchange mailbox and being unable to reinstall or sign in to Outlook. The following steps focus on restoring mailbox access and Outlook connectivity; legal or litigation questions are out of scope and cannot be addressed.

1. Verify whether the Exchange mailbox itself is working

• Try signing in to Outlook on the web (OWA) for the same account. If OWA also shows no new mail or fails to open the mailbox, the problem is likely on the server side (mailbox disabled, routing issue, or hosted Exchange outage).
• In that case, contact the hosted Exchange/tenant administrator (this may be the provider that hosts the Exchange service, not necessarily Microsoft directly) and ask them to:
  • Check whether the mailbox is disabled or terminated.
  • Confirm that the mailbox is still licensed and active.
  • Confirm there are no transport rules or mailbox rules diverting or deleting new mail.

2. If Outlook for Mac or Windows is not receiving mail but OWA works Use the client-side troubleshooting from the documentation:

• Confirm Outlook is online (Mac example):
  • On the Outlook menu, ensure “Work Offline” is not checked.
• Check the Exchange connection:
  • Outlook for Mac: Tools → Accounts.
  • Look at the Exchange account in the accounts list; if the indicator icon is orange, there is a connection problem.
  • If the account previously worked, test access via Outlook on the web to confirm the server is reachable.
• If the account connects but does not sync, clear the local cache (Mac example):
  • Ensure the computer is connected to the Exchange server.
  • In the navigation pane, Ctrl+click or right‑click the affected Exchange folder → Properties.
  • On the General tab, select “Empty Cache”. Outlook will re-download items from the server. This deletes any items not yet synchronized to the server, so ensure important data is backed up first.

3. If Outlook cannot connect to Exchange at all

• Check whether the Exchange server is available:
  • Outlook for Mac: Tools → Accounts.
  • If the Exchange account shows an orange indicator, there is a connectivity issue.
  • Try connecting from another Exchange client such as Outlook on the web.
  • If that also fails, the Exchange server or mailbox may be unavailable; contact the Exchange administrator to verify server status.
• Ensure required encryption settings are enabled if the account requires SSL:
  • Outlook for Mac: Tools → Accounts → select the account → Advanced → Server tab.
  • Under Microsoft Exchange and Directory service, select “Use SSL to connect”.
• If a mail proxy is required to reach the Exchange server, the Exchange administrator must provide the proxy details and assist with configuration.

4. If Outlook will not install or sign in (Windows classic Outlook)

• Use the official troubleshooters for classic Outlook (not the new Outlook for Windows):
  • Go to the Classic Outlook troubleshooters page referenced in the documentation and run the appropriate troubleshooter for installation or sign-in issues.
  • These tools can repair profile problems, connectivity issues, and some installation failures.
• If Outlook is installed but cannot connect to Microsoft 365 or Exchange Online, use the Support and Recovery Assistant (SaRA) for Outlook connection problems. It can automatically diagnose and fix many common connection issues.

5. If Outlook is using a temporary mailbox or wrong service If Outlook shows messages like “Your mailbox has been temporarily moved on Microsoft Exchange server” or starts using a temporary Outlook.com address instead of the hosted Exchange mailbox, the profile and autodiscover configuration may be wrong. The typical remediation is:

• Close Outlook completely and ensure no Outlook.exe or MSOSYNC.exe processes remain running.
• Apply the appropriate autodiscover/registry configuration (for example, ExcludeExplicitO365Endpoint in some hosted Exchange scenarios) so Outlook stops connecting to the wrong endpoint.
• Create a fresh Outlook profile and add only the correct hosted Exchange account so Outlook connects to the proper mailbox again.

6. When self-service steps do not resolve the issue

• If the mailbox is hosted in Microsoft 365/Exchange Online under a business tenant, an administrator can:
  • Use the Microsoft 365 admin center and Exchange admin tools to check mailbox status and delivery issues.
  • Use the “Find and fix email delivery issues” guidance to investigate mail flow problems.
  • Open a support ticket with Microsoft via the admin portal if the issue is on the service side.
• For classic Outlook client problems that persist after running troubleshooters, the documentation explicitly recommends contacting support via the provided support channel.

These steps cover what can be done from the client and tenant side to restore email flow and Outlook connectivity. Any server-side outage, mailbox disablement, or hosted Exchange platform issue must be resolved by the service provider or tenant administrator using their administrative tools and support channels.

References:

• I'm not receiving email or other items in my Exchange account in Outlook for Mac
• I can't connect to my Exchange account
• I can't connect to my Exchange account in Outlook for Mac
• Issues sending and receiving email
• Fix Outlook connection problems for Microsoft 365 account
• Outlook is using a temporary email and I cannot receive emails - Microsoft Q&A
• Not able to have access to my email ! - Microsoft Q&A
• Stopped receiving emails on my account. - Microsoft Q&A