7,402 questions with Exchange Online tags

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1 answer One of the answers was accepted by the question author.

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

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

7,402 questions
asked 2026-09-17T17:47:05.73+00:00
Holly Rockwell 0 Reputation points
accepted 2026-09-17T19:52:38.1633333+00:00
Holly Rockwell 0 Reputation points
1 answer

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
Exchange Online

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

7,402 questions
asked 2026-09-17T07:35:54.8833333+00:00
Fedda306 Anadi 20 Reputation points
answered 2026-09-17T09:22:00.2466667+00:00
Heimerdinger 380 Reputation points Independent Advisor
2 answers

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
Exchange Online

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

7,402 questions
Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2024-07-25T20:51:04.4733333+00:00
Alan Adkins 0 Reputation points
answered 2026-09-16T10:41:07.61+00:00
Iqbal Hamid 0 Reputation points
2 answers

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
Exchange Online

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

7,402 questions
asked 2026-06-26T11:38:14.2066667+00:00
Michal Rama 40 Reputation points
commented 2026-09-16T09:55:40.8833333+00:00
Mareo 0 Reputation points
0 answers

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
Exchange Online

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

7,402 questions
asked 2025-08-11T19:54:27.1866667+00:00
Gurudas Anand Satardekar 951 Reputation points
edited a comment 2026-09-16T09:01:38.7933333+00:00
Dariusz Lelito 0 Reputation points
1 answer

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
Exchange Online

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

7,402 questions
asked 2026-09-02T23:10:45.76+00:00
THOMAS Joey 0 Reputation points
edited an answer 2026-09-16T06:21:17.1766667+00:00
Michelle Nguyen 1,510 Reputation points Independent Advisor
3 answers

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
Exchange Online

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

7,402 questions
Microsoft 365 and Office | SharePoint | For business | Windows
Microsoft 365 and Office | OneDrive | For business | Windows
Microsoft Security | Microsoft Entra | Microsoft Entra ID
Microsoft Teams | Microsoft Teams for business | Other
asked 2023-01-24T17:30:03.8933333+00:00
Cory Calavan 41 Reputation points
commented 2026-09-15T14:46:24.15+00:00
Sophia Mitchell 0 Reputation points
1 answer

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
Exchange Online

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

7,402 questions
asked 2026-09-14T08:31:24.8933333+00:00
Zayan zay 40 Reputation points
commented 2026-09-15T06:16:59.0733333+00:00
Ana Le 2,435 Reputation points Independent Advisor
2 answers

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
Exchange Online

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

7,402 questions
Outlook | Windows | Classic Outlook for Windows | For business
asked 2024-08-21T19:39:51.5366667+00:00
IniobongNkanga-8038 1,011 Reputation points
answered 2026-09-15T05:10:56.6066667+00:00
Vishal Kumar 0 Reputation points
1 answer

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
Exchange Online

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

7,402 questions
asked 2026-09-14T07:16:18.2433333+00:00
Akanksha Chauhan 0 Reputation points
answered 2026-09-14T10:53:15.7233333+00:00
Heimerdinger 380 Reputation points Independent Advisor
1 answer One of the answers was accepted by the question author.

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
Exchange Online

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

7,402 questions
asked 2026-09-05T16:33:27.6933333+00:00
Priya Jayaraman 486 Reputation points
accepted 2026-09-13T02:45:51.94+00:00
Priya Jayaraman 486 Reputation points
2 answers

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
Exchange Online

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

7,402 questions
asked 2026-09-01T18:01:49.5733333+00:00
Robert Esguerra 0 Reputation points
edited a comment 2026-09-13T02:36:18.6033333+00:00
Alina Le 5,000 Reputation points Independent Advisor
6 answers

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
Exchange Online

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

7,402 questions
asked 2026-09-09T19:00:29.8866667+00:00
Alex 30 Reputation points
edited a comment 2026-09-11T20:17:45.97+00:00
Ryan-N 15,750 Reputation points Microsoft External Staff Moderator
25 answers

The operation couldn’t be completed. (com.apple.accounts error 3.)

unable to add exchange account to the mail app on osx

Exchange Online
Exchange Online

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

7,402 questions
asked 2025-11-19T13:57:52.4133333+00:00
Ralf 85 Reputation points
answered 2026-09-11T13:26:04.31+00:00
Marius Coterlet 0 Reputation points
2 answers

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
Exchange Online

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

7,402 questions
asked 2026-08-17T20:36:12.61+00:00
kesavan 0 Reputation points
edited an answer 2026-09-11T01:31:40.7933333+00:00
Hendrix 1,090 Reputation points Independent Advisor
1 answer

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
Exchange Online

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

7,402 questions
asked 2026-09-10T05:32:46.6633333+00:00
Simran Priya 0 Reputation points
commented 2026-09-11T01:07:46.99+00:00
Jade Ng 15,480 Reputation points Microsoft External Staff Moderator
2 answers

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
Exchange Online

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

7,402 questions
asked 2026-08-31T16:34:47.9866667+00:00
Marton, Norbert 0 Reputation points
edited an answer 2026-09-11T00:20:13.4833333+00:00
Hendrix 1,090 Reputation points Independent Advisor
1 answer

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
Exchange Online

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

7,402 questions
asked 2026-09-09T19:52:43.35+00:00
Juan Alicea Rodriguez 0 Reputation points
commented 2026-09-10T22:45:56.5033333+00:00
Jay1 Tran 695 Reputation points Independent Advisor
2 answers

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
Exchange Online

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

7,402 questions
asked 2026-09-09T01:28:07.43+00:00
Jeff Wittern 0 Reputation points
edited a comment 2026-09-10T08:06:40.4533333+00:00
Austin-H 8,380 Reputation points Microsoft External Staff Moderator
2 answers

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
Exchange Online

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

7,402 questions
asked 2026-08-18T04:39:14.69+00:00
Glenn Maxwell 14,206 Reputation points
edited an answer 2026-09-09T11:34:31.43+00:00
Daniel-Vo 6,365 Reputation points Microsoft External Staff Moderator