Issue Removing Domain from Personal Account

Question

Issue Removing Domain from Personal Account

Mike Cusick 0

A few people have reported this issue but I have yet to see a resolution. I moved my custom domain to a Microsoft business account. I updated the DNS and MX records on GoDaddy and my email is flowing fine to the new business account. Even though I removed the aliases from my Microsoft account and profile before transferring the domain, the domain is still associated with my personal account. I am unable to remove the domain and aliases. This is preventing me from using my Outlook App for both my personal and business accounts. Please provide a solution to resolve this issue.
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Moved from: Outlook | Windows | New Outlook for Windows | For home

Matthew Alford 0 Reputation points

2026-03-20T11:13:25.81+00:00

Was there a fix for this issue? I’m having the exact same problem and support aren’t providing any help?
Mike Cusick 0 Reputation points

2026-03-24T18:03:40.7433333+00:00

No valid solution provided here and the support team has been no help. We are not alone. I have seen others post the same issue and never see a resolution.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-25T02:20:55+00:00

Dear @Mike Cusick, @Matthew Alford,

I’m really sorry you’ve been put through this. You did the right things (removed the aliases, moved the domain, and confirmed mail flow), and it’s completely understandable to feel stuck when New Outlook still blocks you with “this email address has already been added.”

What’s happening here is related to how Microsoft personal accounts and Microsoft 365 business accounts are handled in separate backend identity systems. Even after aliases are removed from the personal account interface, some hidden backend references to the custom domain can remain. The New Outlook app performs stricter identity checks than Classic Outlook, which is why Classic Outlook still works while New Outlook reports that the email address has already been added.

At this time, there is no self‑service or admin‑level option to remove these backend references. This type of cleanup can only be performed by Microsoft’s personal account identity teams, and it isn’t something that business support engineers or moderators can resolve directly. This is why the issue may persist even after completing all available removal steps.

In the meantime, using Classic Outlook for both accounts is a valid workaround.

I truly appreciate your patience and understanding.
Mike Cusick 0 Reputation points

2026-03-25T05:24:28.5466667+00:00

@AlexDN Thank you for conforming there is a backend reference to the domain that a end user cannot remove. How does one get in contact with and/or open a case with the Microsoft personal account identity team to get this resolved? Serval times, I have asked the support team to escalate my case but no action has been taken.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-25T05:34:24.9966667+00:00

Dear @Mike Cusick,
Could you please try to login to office.com and login by that account, then screenshot what happen (please included the address bar also).
Mike Cusick 0 Reputation points

2026-03-25T12:50:32.01+00:00

@AlexDN Thank you for your assistance. Not sure what you are asking for here. I have no issues logging into OFFICE.COM or accessing my personal and business accounts online. I already provided a screenshot of the error.

Here are the address bars when I login to my personal account; the landing page, which now takes everyone to Copilot and opening Outlook.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-26T04:11:29.4066667+00:00

Hi @Mike Cusick, can you try again using the account with custom domain you have mention here.

The main issue with the domain still being associated with my personal account is that I can not use both accounts in the New Outlook app.
Mike Cusick 0 Reputation points

2026-03-26T04:23:15.8966667+00:00

Still unable to add my custom domain business account (mikecusick.com) to New Outlook along with my personal account. The alias is still associated with my personal account.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-26T04:36:42.71+00:00

Hi @Mike Cusick,
Could you please try login to Outlook on web using New InPrivate windows with your @mikecusick.com account?

Besides, please log out from New Outlook then clear the credential follow the steps below:

Go to Control Panel > Credential Manager and remove any saved Microsoft or Office 365 credentials.

2 answers

Your answer

Matthew Alford 0 Reputation points

2026-03-20T11:13:25.81+00:00

Was there a fix for this issue? I’m having the exact same problem and support aren’t providing any help?
Mike Cusick 0 Reputation points

2026-03-24T18:03:40.7433333+00:00

No valid solution provided here and the support team has been no help. We are not alone. I have seen others post the same issue and never see a resolution.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-25T02:20:55+00:00

Dear @Mike Cusick, @Matthew Alford,

I’m really sorry you’ve been put through this. You did the right things (removed the aliases, moved the domain, and confirmed mail flow), and it’s completely understandable to feel stuck when New Outlook still blocks you with “this email address has already been added.”

What’s happening here is related to how Microsoft personal accounts and Microsoft 365 business accounts are handled in separate backend identity systems. Even after aliases are removed from the personal account interface, some hidden backend references to the custom domain can remain. The New Outlook app performs stricter identity checks than Classic Outlook, which is why Classic Outlook still works while New Outlook reports that the email address has already been added.

At this time, there is no self‑service or admin‑level option to remove these backend references. This type of cleanup can only be performed by Microsoft’s personal account identity teams, and it isn’t something that business support engineers or moderators can resolve directly. This is why the issue may persist even after completing all available removal steps.

In the meantime, using Classic Outlook for both accounts is a valid workaround.

I truly appreciate your patience and understanding.
Mike Cusick 0 Reputation points

2026-03-25T05:24:28.5466667+00:00

@AlexDN Thank you for conforming there is a backend reference to the domain that a end user cannot remove. How does one get in contact with and/or open a case with the Microsoft personal account identity team to get this resolved? Serval times, I have asked the support team to escalate my case but no action has been taken.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-25T05:34:24.9966667+00:00

Dear @Mike Cusick,
Could you please try to login to office.com and login by that account, then screenshot what happen (please included the address bar also).
Mike Cusick 0 Reputation points

2026-03-25T12:50:32.01+00:00

@AlexDN Thank you for your assistance. Not sure what you are asking for here. I have no issues logging into OFFICE.COM or accessing my personal and business accounts online. I already provided a screenshot of the error.

Here are the address bars when I login to my personal account; the landing page, which now takes everyone to Copilot and opening Outlook.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-26T04:11:29.4066667+00:00

Hi @Mike Cusick, can you try again using the account with custom domain you have mention here.

The main issue with the domain still being associated with my personal account is that I can not use both accounts in the New Outlook app.
Mike Cusick 0 Reputation points

2026-03-26T04:23:15.8966667+00:00

Still unable to add my custom domain business account (mikecusick.com) to New Outlook along with my personal account. The alias is still associated with my personal account.
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-26T04:36:42.71+00:00

Hi @Mike Cusick,
Could you please try login to Outlook on web using New InPrivate windows with your @mikecusick.com account?

Besides, please log out from New Outlook then clear the credential follow the steps below:

Go to Control Panel > Credential Manager and remove any saved Microsoft or Office 365 credentials.

Answer 1

Thank you for the detailed response. I have done everything you described a few times. The agent does not seem to be able to assist me. As an MS admin myself, if one has the access to backend system, this should be a simple fix. Go to my account, find all references to the custom domain, and remove the information. I assume the correct support team or tech, at the needed level, has not been engaged. I have seem others post here with the same issue. Not certain why MS can't just resolve the issue. Afterall, they created the issue when they removed the ability to add and manage custom domains on personal accounts. At this point, I am using the classic Outlook client to manage both my personal and business accounts. That will work until MS kills Outlook classic. Until then, I will keep trying with support and hope for a better result.

Answer 2

AlexDN 11,420 Microsoft External Staff Moderator

Dear @Mike Cusick, Thank you for posting your question in the Microsoft Q&A forum.

I understand that after moving your custom email domain from your personal Microsoft account to your Microsoft 365 business account, you’re still seeing that domain tied to your personal account. You mentioned that you removed the domain’s email aliases from your personal account and updated the DNS and MX records at GoDaddy. Email is flowing correctly to your business account now, but the domain lingering on your personal account is stopping you from using Outlook with both your personal and business accounts.

To better assistance, could you please confirm:

Are you still able to sign in to the Microsoft personal account that previously used this domain?

Have all email aliases using this domain been removed from the personal account?

Please go to https://account.live.com/names/Manage and check if the domain or any aliases using this domain are still listed on your Microsoft personal account.

Are you using the New Outlook for Windows, or have you also tried Classic Outlook?

Your detailed response will help us diagnose and investigate the issue more efficiently.

I truly appreciate your patience and understanding. If I misunderstood what you’re looking for, feel free to let me know or share a screenshot. I’d be happy to help further!

I'm looking forward for your reply. Thank you for your cooperation.

Mike Cusick 0 Reputation points

2026-03-07T15:16:36.3833333+00:00

Hi Alex.

Thank you for your response.

I cleared the domain from MS Live account and had already verified, using the same link you provided, the aliases were removed from my personal account.

The main issue with the domain still being associated with my personal account is that I can not use both accounts in the New Outlook app. If I try to add the business account to New Outlook it indicates that the "email address has already been added" to my personal account. I was able to add both accounts to the old, classic outlook app.

I followed all the steps, listed in Microsoft support, to first remove the domain from my personal account before transferring it to my business account but somehow it is still there. I only did all this because Microsoft removed the option a while back to use and manage custom, personalized domains with a personal, home account.

At first I thought it was just a profile in the New Outlook app but I see the same association and get the same error trying to remove the aliases using Outlook Online.

Microsoft will need to go in and clear the domain in the backend, or tell me how to do it.

Regards, [Moderator note: personal info removed]
AlexDN 11,420 Reputation points Microsoft External Staff Moderator

2026-03-09T07:46:29.57+00:00
Dear @Mike Cusick,

Thank you for your information, to reach customer support for personal account, please visit Contact - Microsoft Support

Search for "Remove custom domain from personal account" in the search box.

Click "Get Help" and press Enter.

Navigate through the support options to find "Contact Support."

Choose as picture below:

Look for and select "Chat with a support agent in your web browser" or a similar callback option.

For reference: Get Help for Microsoft personal account users

Note: As moderators, my primary goal is to provide helpful guidance and support through general troubleshooting steps. While I don’t have access to internal systems or administrative tools required to resolve account-specific or backend issues, I truly appreciate your understanding of these limitations. I genuinely hope the information I share helps guide you in the right direction, and I'm always here to assist as much as I can within my scope.

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Issue Removing Domain from Personal Account

2 answers

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