Outlook.com rejects every username containing my real first name “Esmail”

Esmail Nouralden 20 Reputation points
2026-07-12T21:10:33.0233333+00:00

Hello Microsoft Community,

I am trying to create the Outlook.com address:

******@outlook.com

The registration system says that the address is unavailable. However, when I try to sign in or recover it, Microsoft says that no account exists with this username.

I also tested several completely new variations, including:

  • ******@outlook.com
  • ******@outlook.com
  • ******@outlook.com

Every username containing “esmailnouralden” is rejected, while unrelated random usernames are accepted normally.

“Esmail” is my real first name. Because the letters “mail” appear naturally inside my name, I am concerned that the automated username filter may be incorrectly treating my name as a restricted term.

Microsoft Support informed me that the username availability system is automated and that support agents cannot view or override its internal decision.

Has anyone experienced the same issue? Is there an official way to report this as a possible false-positive username restriction or have it reviewed by the Outlook.com product team?

My preferred address is ******@outlook.com.

Thank you.

Outlook | Web | Outlook.com | Email
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Answer accepted by question author
EmilyS726 267.9K Reputation points Independent Advisor
2026-07-12T21:53:41.3533333+00:00

Hello,

This does not necessarily mean that the address belongs to an existing Microsoft account. The username or part of it may be a reserved phrase that Microsoft’s automated registration system does NOT allow people to use.

When a phrase is reserved, the address cannot be registered, but there is also no account to sign in to or recover. That explains why registration says the address is unavailable while account recovery says the account does not exist.

Since unrelated usernames work, but multiple variations containing “esmailnouralden” are rejected, this strongly suggests that the exact name or part of it is being caught by Microsoft’s automated username filter. It may or may not specifically be the letters “mail,” and Microsoft does not publish its list of reserved or restricted username combinations.

Unfortunately, community members and regular support agents cannot view or override this filter. Microsoft also does not provide a public process for manually releasing a reserved Outlook.com username. The only available option is to submit feedback through Outlook.com > Help > Feedback, but there is no guarantee that the address will be reviewed or made available. Honestly it will be unlikely just to be honest with you. It is reserved for a reason.

You will most likely need to choose a variation that the registration system accepts.

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