Need Help: Sign-in options disabled

Hello, thank you for reaching out to Microsoft Q&A.

If you no longer have a Work/School account added to your device and are having the above error, you can try this method below and see if it resolves the issue.

Open Command Prompt as Administrator and execute these commands one by one, and click Enter for each command.

reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKLM\Software\Microsoft\WindowsSelfHost" /f

reg delete "HKLM\Software\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware

reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKCU\Software\Microsoft\WindowsSelfHost" /f

reg delete "HKCU\Software\Policies" /f

reg delete "HKLM\Software\Microsoft\Policies" /f

Once completed, type exit and click Enter to close the command prompt.

Restart your computer.

Let me know how it goes.