Cannot add domain to Entra

Question

Cannot add domain to Entra

Lorenzo Zambelli 180

I can't associate our main domain with a tenant, because it is already in use.. how can I proceed?

We think that our domain has already been associated in the past in another account that we can't trace at the moment.

We need this to be able to transform some private accounts into business accounts in Microsoft Enter via the email domain.

Harshitha Eligeti 4,385 Reputation points Microsoft External Staff Moderator

2025-03-03T16:35:31.1233333+00:00

Hi @Lorenzo Zambelli
We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution, please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
Lorenzo Zambelli 180 Reputation points

2025-03-04T10:08:22.5566667+00:00

Hello @Harshitha Eligeti , if I remember correctly we had a call where you verified that we really are the owners of that domain, because I have no clue how to enter the tenant we found I'm waiting for further help from your end.. I hope to hear some news soon from you!

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Harshitha Eligeti 4,385 Reputation points Microsoft External Staff Moderator

2025-03-03T16:35:31.1233333+00:00

Hi @Lorenzo Zambelli
We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution, please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
Lorenzo Zambelli 180 Reputation points

2025-03-04T10:08:22.5566667+00:00

Hello @Harshitha Eligeti , if I remember correctly we had a call where you verified that we really are the owners of that domain, because I have no clue how to enter the tenant we found I'm waiting for further help from your end.. I hope to hear some news soon from you!

Answer 1

Hi @Lorenzo Zambelli
Thank you for connecting offline over call.

The issue relates to a unable to verify custom domain name as it is verified in different directory in Azure.

To resolve this, we engaged our Data Protection team through a support ticket. Please connect with our support team via the ticket, and they will assist you in resolving the issue.

I hope this information is helpful. Please feel free to reach out if you have any further questions.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Answer 2

Harshitha Eligeti 4,385 Microsoft External Staff Moderator

Hi @Lorenzo Zambelli
Thank you for Reaching out Microsoft Q&A Platform.
I understand that your domain is already associated with another tenant and you're unable to trace that tenant.
Based on your query, you cannot use the same domain with two tenants. To find out which tenant your domain is associated with, you can search using the following link: https://www.icann.org/en/accredited-registrars
Do let us know if you any further queries.

Lorenzo Zambelli 180 Reputation points

2025-02-17T11:45:37.2433333+00:00

Hello, thank you for your reply, I'm sorry but I didn't find where to search, I'm only finding a list of providers and regions, I tried the lookup function, but I'm only getting generic results of the provider where we registered our domain, may I ask if it's possible that I let you know our domain so you can perform the search?
Harshitha Eligeti 4,385 Reputation points Microsoft External Staff Moderator

2025-02-19T08:48:27.17+00:00

Hi @Lorenzo Zambelli
Can you please use this link: https://www.whatismytenantid.com/
To see where your domain is configured within the tenant and identify which tenant the domain is registered under, use this link to find the tenant ID. With the tenant ID, you will be able to log in to your tenant.
Do let us know if you any further queries.
Lorenzo Zambelli 180 Reputation points

2025-02-19T10:03:58.33+00:00

Sorry, removed for duplication.
Lorenzo Zambelli 180 Reputation points

2025-02-19T10:07:06.02+00:00

Hello @Harshitha Eligeti thank you for your reply, we were able to retrieve the ID of the tenant linked to our domain, but now how can I know who created that tenant? Or, is there a way to remove our domain from that tenant?
Harshitha Eligeti 4,385 Reputation points Microsoft External Staff Moderator

2025-02-23T08:12:54.35+00:00

Hi @Lorenzo Zambelli
Please try logging into the Azure portal using the following links:
https://portal.azure.com/<tenantID>
https://portal.azure.com/<domain.onmicrosoft.com>
To remove your domain from the tenant, please refer to this document:
https://learn.microsoft.com/en-us/microsoft-365/admin/get-help-with-domains/remove-a-domain?view=o365-worldwide#step-3-remove-the-old-domain
Do let us know if you any further queries.
Lorenzo Zambelli 180 Reputation points

2025-02-24T11:30:18.7866667+00:00

Hello Harshita, thank you for your reply! My problem is that I don't know how to login into this tenant, so I should retrieve somehow the main account of that tenant, before I login, is that possible?
Harshitha Eligeti 4,385 Reputation points Microsoft External Staff Moderator

2025-02-25T04:38:33.72+00:00

Hi @Lorenzo Zambelli
Lets discuss further on the issue in offline for your query in detail

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Cannot add domain to Entra

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