If the sign-in now says "account does not exist", use the official recovery path in this order:
- Run the Sign-in Helper tool first. It checks the email address or phone number entered and tells what recovery action is available.
- If the email address is correct but still shows "The Microsoft account you've entered does not exist", review My username and password have stopped working from the sign-in help flow.
- If access was lost after suspicious activity, try password recovery from the sign-in page with Forgot my password and select I think someone else is using my Microsoft account.
- If the account recovery form is available, complete it from a device and location previously used to sign in. Include as much accurate history as possible, such as older passwords. Results are sent to the working email address provided, usually within 24 hours. If verification fails, the form can be retried up to two times per day.
Important limits:
- Microsoft support agents cannot send password reset links or directly change account details.
- If two-step verification was turned on and none of the alternate verification methods are accessible, support cannot bypass that protection.
- If the account has not been signed in to for more than two years, it may have been deleted and cannot be reopened.
- Receipts and proof of purchase may help document ownership, but the supported recovery path is still the automated account recovery process.
If unusual sign-in alerts were received before this happened and access is regained, immediately go to Security basics and review recent activity, then change the password.
References:
- I can't sign in to my Microsoft account | Microsoft Support
- Help with the Microsoft account recovery form | Microsoft Support
- What happens if there's an unusual sign-in to your account | Microsoft Support
- Get help with your Microsoft account
- Check products or services where you used your Microsoft account | Microsoft Support