Hi Jimmy Schofield,
Welcome to Microsoft Q&A forum. I'm happy to help.
When you change the primary email on your Microsoft account, the update doesn’t always immediately sync to Windows devices or Remote Desktop. If the Remote Desktop client or the remote PC still shows your old email, it’s usually due to cached credentials or the remote machine still being configured to allow the old Microsoft account.
Here are the steps that typically resolve this issue:
- Make sure the remote PC has recognized the new Microsoft account email
Sign out and sign back in on your computers using your new Microsoft account email. This forces Windows to refresh the local identity associated with your account. - Add the new email explicitly to Remote Desktop Users
Windows Remote Desktop requires the correct account to be listed, this step ensures the updated account is permitted for RDP.- Go to Settings > System > Remote Desktop
- Select Users that can remotely access this PC
- Click Add, and enter the new Microsoft account email
- Clear cached credentials on the computer you're connecting from
- Open Credential Manager → Windows Credentials
- Remove entries related to:
- Your old Microsoft account email
- Any
TERMSRVentries
- Use the updated login format when connecting
When RDP asks for credentials, enter the full updated username in this format:MicrosoftAccount\******@domain.com - Restart your machines
I hope that above information is helpful to you.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.