Verify Custom Domain Failed

Question

Verify Custom Domain Failed

Sean Perryman 20

When I try and verify my domain in Entra, I get this message:

This domain has been previously configured on an existing Microsoft Entra tenant or Office 365. To verify this domain name, you will first need to remove the domain name from the existing directory.

Is this because I previously had an Azure tenant that used this domain (since deleted), or is it because I purchased Microsoft 365 (with Exchange) and used my domain email address, so now that is configured there?

Is there any way around this, other than using another domain (e.g. domain.net)?

Mostly just looking for my users to be able to log into AVD as ******@domain.com rather than ******@domain.onmicrosoft.com.

RUPESH N. MANEKAR 0 Reputation points

2024-05-22T17:04:27.8633333+00:00

https://support.microsoft.com/en-us/topic/error-message-when-you-try-to-verify-a-domain-in-office-365-74f4d326-adad-a106-814a-7b3a237f6ceb
Sean Perryman 20 Reputation points

2024-05-22T18:02:39.6666667+00:00

I don't know that this specifically addresses my issue, unless I have a misunderstanding of how Azure authentication works (which I might). I have Microsoft 365 with this domain, and I want to add the domain to a separate Azure Entra account (if possible). They are not specifically tied together.
Marcin Policht 92,630 Reputation points MVP Volunteer Moderator

2024-05-22T18:49:43.52+00:00

Hi Sean - no, that's not possible. Microsoft 365 is already using an Entra tenant - you cannot create another one with the same name

You can simply use the existing tenant instead.

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

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RUPESH N. MANEKAR 0 Reputation points

2024-05-22T17:04:27.8633333+00:00

https://support.microsoft.com/en-us/topic/error-message-when-you-try-to-verify-a-domain-in-office-365-74f4d326-adad-a106-814a-7b3a237f6ceb
Sean Perryman 20 Reputation points

2024-05-22T18:02:39.6666667+00:00

I don't know that this specifically addresses my issue, unless I have a misunderstanding of how Azure authentication works (which I might). I have Microsoft 365 with this domain, and I want to add the domain to a separate Azure Entra account (if possible). They are not specifically tied together.
Marcin Policht 92,630 Reputation points MVP Volunteer Moderator

2024-05-22T18:49:43.52+00:00

Hi Sean - no, that's not possible. Microsoft 365 is already using an Entra tenant - you cannot create another one with the same name

You can simply use the existing tenant instead.

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

Answer 1

Marcin Policht 92,630 MVP Volunteer Moderator

Hi Sean - no, that's not possible. Microsoft 365 is already using an Entra tenant - you cannot create another one with the same name

You can simply use the existing tenant instead.

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

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Verify Custom Domain Failed

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