Hi, thank you for getting back to us.
Option1.
May I please know if you have set a password for your local admin account?
Go to Start > Settings > Sign in options > Password. (Create or change the password).
Then, switch your account to a Microsoft account.
2.
Restart the Microsoft Account sign-in Assistant service.
- Click Windows + R key, type services.msc, and click ok.
- Locate the Microsoft Account sign-in Assistant service, right-click on it, and select 'Restart'****. Ensure the startup type is set to Automatic and the service status is set to Running.
Check for the latest Windows updates.
Go to Start > Settings > Update & Security > Check for Updates.
Download and install all the pending updates available for your device.
If you're still encountering the same error, try connecting your PC to a VPN network temporarily to see if you can sign in with your Microsoft account. You can download a free VPN app from the Microsoft Store and connect your PC to a different region. Once you're signed in with your Microsoft account, you can disable or uninstall the VPN app later.
Let me know if you still need more help.