If a Microsoft account suddenly shows “account doesn’t exist”, the supported causes in this scenario are:
- The email or username was entered incorrectly.
- The sign-in alias or username stopped working.
- The account has been inactive for more than two years, in which case it may have been deleted and cannot be reopened.
- The account may be locked or affected by a sign-in issue that needs account recovery steps.
Use this recovery path:
- Go to the Microsoft account sign-in page and try the address again carefully. If a password prompt appears, that address is a Microsoft account. If the message says “We couldn't find an account with that username” or “That Microsoft account doesn't exist,” continue to the next step.
- Run the Sign-in Helper tool. It checks the email address or phone number entered and tells what action is needed: Sign-in helper
- If the account has not been used for more than two years, it may have been deleted and can no longer be reopened.
- If the account is locked, sign in at https://account.microsoft.com to request a security code and unlock it.
- If password reset is needed and normal recovery does not work, use the Account recovery form: Account recovery form
If this happened after changing the main sign-in email or alias, and the account is a personal Microsoft account, also check whether the old alias was removed or replaced. If the old address no longer works, try the current primary alias in the sign-in flow or use the Sign-in Helper.
If the account uses the same email address for both a personal Microsoft account and a work or school account, the sign-in page can show “Which account do you want to use?” In that case, make sure the personal account is being selected.
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