A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Domain "already added to a different Microsoft 365 organization" — need domain released from a tenant I don't control
Issue: We own the domain heritageconsultants.net and am trying to add it to my Microsoft 365 organization. When I add it, verification succeeds, but I get this error: "We have confirmed that you own heritageconsultants.net, but we can't add it to…
Exchange Online
Exchange online mailbox provisioning issue
I've been running into a problem where the provisioning script fails to create an Exchange Online mailbox for a newly hired employee. The script completes without errors, but the mailbox simply doesn’t appear in the admin center. I’ve already checked the…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Unable to Change Existing User’s Username/Primary Email Address in MS365
Unable to Change Existing User’s Username/Primary Email Address in MS365 When logged into the MS365 admin portal as a Global Admin, trying to change an existing user’s username and primary email address, the change fails, and the dialog box shows this…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Microsoft Security | Microsoft Entra | Microsoft Entra ID
A cloud-based identity and access management service for securing user authentication and resource access
Automatic replies only to emails outside the organization?
Hello, I need to set up automatic replies for a shared mailbox. However, only for external emails, it doesn't matter for emails within the organization. There is an option for automatic forwarding in the Admin Center. I can even set it to send a…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
External Mail Flow Configuration in Exchange Online
What are the steps and considerations for setting up external mail flow for Exchange Online? Specific details on how it functions and any potential issues to be aware of would be helpful. Explain it with examples.
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
How to fix my email
My emails are not sending because of my admin they are appropriate and I do not understand why I can't send them
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Best way to do a phased tenant to tenant migration
Hello All, My company is more than likely going through an internal acquisition. The CEO/Founder is wanting to retire and the President is going to buy him out. I am looking for the best way to migrate the first phase of systems over a weekend. We are…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Microsoft 365 and Office | SharePoint | For business | Windows
A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Microsoft 365 and Office | OneDrive | For business | Windows
A Microsoft file hosting and synchronization service.
Microsoft Security | Microsoft Entra | Microsoft Entra ID
A cloud-based identity and access management service for securing user authentication and resource access
Microsoft Teams | Microsoft Teams for business | Other
Additional features, settings, or issues not covered by specific Microsoft Teams categories
Extracting Email Addresses from the Last 6 Months
Hi Team, I need to extract the received and sent email addresses from a user’s mailbox for the last six months. I have checked this in Exchange, but it only allows me to search up to 10 days at a time, which makes it difficult to retrieve the required…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Transferring my old email inbox data into the new M365 exchange.
I require assistance transferring my old email inbox data into the new M365 exchange. I have old data stored within OX Mail (Webcentral) and need this history to be transferred into my new account with M365
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Outlook | Windows | Classic Outlook for Windows | For business
Using classic Outlook for Windows in business environments
IMAP Migration from Google Workspace to Microsoft 365
Hello Team, Greetings!! We have recently been experiencing significant delays during IMAP migrations from Google Workspace to Microsoft 365 and would like to understand if there are any known issues or recent changes affecting IMAP migration…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Exchange online-Deleting a group and recreating a new group with same email address and outlook cache issues
Exchange online query-Deleting a group and recreating a new group with same email address. Will this scenario bring outlook lookup issue of the deleted group from the existing outlook cache? Cheers Priya
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Register my own domain with microsoft exchange
I have my own domain that was linked to Outlook for 15 years. It stopped working last year and I was told that I have to register my domain with Microsoft Exchange
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Apple Mail on macOS repeatedly receives HTTP 429 from Exchange Online EWS after account re-add
September 9, 2026: I’m having an Exchange Online synchronization issue with Apple Mail on macOS. The account worked normally in Apple Mail for approximately a year before suddenly stopping synchronization today. Other access to the mailbox continues to…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
The operation couldn’t be completed. (com.apple.accounts error 3.)
unable to add exchange account to the mail app on osx
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
ExchangeOnlineManagement 3.8.0: "Unable to find type [Microsoft.Exchange.Management.ExoPowershellSnapin.JsonTypedConverter]" when running cmdlets
We are running Exchange Online cmdlets using powershell through the ExchangeOnlineManagement PowerShell module, and on some machines the call fails with the following error: Method: executeExchangeModuleCommandAsync ERROR: Unable to find type…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
After sync the batches still showing Investigateing after 12 hours
i have performing imap migration and after syncing the batches again and again still it shows investigate after 24 hours i also tired after stop and resume migration still facing same issue also on migrated outlook mail did not migrate aftter 10:00 am…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Error: 550 5.6.200 STOREDRV.Deliver; message is treated as poison
Hi, A user has issues receiving email, i checked the Message Trace and this is what i did found - could someone explain what this should mean ? ( We are using Exchange Online - not on prem ) Reason: [{LED=550 5.6.200 STOREDRV.Deliver; message is treated…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Clarification on GCCH‑to‑GCCH Tenant Mailbox Migration Support
Hello, I would like to confirm whether Microsoft supports cross‑tenant mailbox migration between two GCCH tenants. From the documentation, I understand that cross‑cloud migrations (e.g., Commercial <> GCCH) are not supported. However, it is less…
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Can not receive emails on Outlook 365
I have not been able to receive emails on Outlook 365 since Friday the 4th at 1030 AM. This is a business account and I need my email!
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
How to recall an email.
One of my users accidentally sent an email from a shared mailbox. Is it possible to recall the email that was sent from the shared mailbox? If recall is supported, could you please share the prerequisites and steps to recall the message?
Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.