I am getting “Something happened and your PIN isn’t available. Click to set up your PIN again.” message when i try to login using PIN.
Login Using Your Password
If you don’t see I forgot my PIN, select Sign-in options and then select Enter your password.
After you’re signed in, select Start > Settings > Accounts > Sign-in options > Windows Hello PIN > I forgot my PIN and then follow the instructions.
This issue has been fixed by Microsoft through this update :https://www.catalog.update.microsoft.com/Search.aspx?q=KB5003690