Hi,
Try deleting the contents of the Ngc folder which stores PIN, and then set up the PIN again.
Open an elevated Command Prompt i.e. CMD(Admin). For that, execute the steps below:
Right-click the Start button and select Run.
Type cmd. Press Ctrl+Shift+Enter.
Press Yes when prompted.
Paste the following command to delete the Ngc folder:
powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,takeown /f C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\NGC /r /d y & icacls C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\NGC /grant administrators:F /t & RD /S /Q C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc & MD C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc & icacls C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /T /Q /C /RESET' -Verb runAs"
Setup the PIN again and restart your computer.
I look forward to hearing from you to get the results of the troubleshooting.