Unable to login - Infinite Login Loop with Outlook hotmail

For an Outlook.com/Hotmail sign-in loop, deleting and re-adding the account is the documented fix for the alias-related login issue in Outlook mobile: Settings > select the affected account > Delete Account, then add it again. If the issue continues, use Settings > Help & Feedback > Contact Support.

For the account itself:

1. The email address remains the same when the account is re-added. Re-adding the account does not create a new address.
2. If the mailbox still works on the web, mail is stored on the server and should resync after the account is added again.
3. If Outlook on Windows is the problem, creating a new Outlook profile can help. Steps:
   1. Close Outlook.
   2. Open Control Panel > User Accounts > Mail > Show Profiles.
   3. Select Add, enter a profile name, and select OK.
   4. Enter the email address and password for the primary account and complete setup.
   5. In Show Profiles, select Prompt for a profile to be used.
   6. Start Outlook and choose the new profile.

If creating a new profile fixes the issue, the old profile can be deleted afterward.

If the username is not recognized during sign-in, try another alias or phone number on the account, if one exists.

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