The message “That Microsoft account doesn’t exist” means the email being entered is not currently recognized as a Microsoft account, even if it is used as a local sign‑in name on the PC.
On Windows, the account shown under Settings → Accounts can be:
- A local account that just happens to use an email address as the username, or
- A Microsoft account that is actually registered online.
If the sign‑in page says the Microsoft account doesn’t exist, that address is not registered (or not registered in exactly that form) as a Microsoft account.
To fix this:
- Confirm the exact address and domain
- Make sure the address is typed exactly the same as when the account was created (spelling, numbers, and domain such as
.com,.co.uk, etc.). - Try any other email aliases or phone numbers that might have been used when first creating the Microsoft account.
- Make sure the address is typed exactly the same as when the account was created (spelling, numbers, and domain such as
- Use the official recovery flow
- Go to Recover your account: https://account.live.com/password/reset
- Enter each email/phone/Skype name that might be associated with the Microsoft account.
- Follow the steps to receive a security code and reset the password if the account is found.
- If the email is truly not a Microsoft account
- If none of the addresses are recognized, then the Windows sign‑in is most likely a local account only. In that case, create or link a Microsoft account separately and then use that for Microsoft services.
- If the problem continues
- Run the Microsoft account sign‑in helper at https://aka.ms/sign-in-helper. It will check the sign‑in details and tell what needs to be done next.
- If the helper still cannot find the account, use Contact support from the article below and explain that the username has stopped working.
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