Remove .onmicrosoft domain

Question

Remove .onmicrosoft domain

eg1995 1,156

Hi team,

Previously we haven't the flexibility to add a new .onmicrosoft.com different then the one created initially.

Now i can see we have the option to use a new one as a fallback domain, however we won;t be able to remove and delete the initial default domain.

can anyone advise if it can't be deleted then what would be the benefit of having 2 .onmicrosoft.com?

thank you

Shweta Mathur 30,431 Reputation points Microsoft Employee Moderator

2023-02-10T12:19:02.43+00:00

Hi @eg1995 ,

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click Accept Answer and Up-Vote for the same, which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.

Thanks, Shweta
Jame Xu-MSFT 4,191 Reputation points

2023-02-13T02:27:05.05+00:00

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Jame Xu-MSFT 4,191 Reputation points

2023-02-28T06:15:34.9233333+00:00

Hi, I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well.

2 answers

Your answer

Shweta Mathur 30,431 Reputation points Microsoft Employee Moderator

2023-02-10T12:19:02.43+00:00

Hi @eg1995 ,

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click Accept Answer and Up-Vote for the same, which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.

Thanks, Shweta
Jame Xu-MSFT 4,191 Reputation points

2023-02-13T02:27:05.05+00:00

Just checking in to see if above information was helpful. Please let us know if you would like further assistance.

If the question has been answered, please accept the helpful replies as answers, this will make answer searching in the forum easier and be beneficial to other community members as well.
Jame Xu-MSFT 4,191 Reputation points

2023-02-28T06:15:34.9233333+00:00

Hi, I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well.

Answer 1

Vasil Michev 123.6K MVP Volunteer Moderator

Multiple .onmicrosoft.com domains are currently only supported by the SPO tenant rename feature, which has a very long list of limitations/known issues. That, combined with the fact that no other workloads support this, explains why you cannot remove the initial domain. It's not a "fallback" option, it's something that the service still relies on.

eg1995 1,156 Reputation points

2023-02-09T08:31:32.9333333+00:00

can you please elaborate on the issues? because based on my understanding only sharepoint link needs the .onmicrosoft.com and this can be changed by powershell. And any other services will be linked to the custom domain that will be added ( exchange online, teams..) so there wouldn't be an impact if i'm guessing it right.

thanks

Answer 2

Hi @eg1995 ,

When you sign up for Microsoft 365, Microsoft provides an onmicrosoft.com domain - your fallback domain - in case you don't own a domain, or don't want to connect it to Microsoft 365 (for example, tailspintoys.onmicrosoft.com).

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You could refer to: Add and replace your onmicrosoft.com fallback domain in Microsoft 365

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Remove .onmicrosoft domain

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