@Jackie Butler
Hi,
Try setting this registry key and reboot:
[ HKEY_LOCAL_MACHINE \ SOFTWARE \ Policies \ Microsoft \ Windows \ System ] “ AllowDomainPINLogon” = dword :00000001
Also, "use Windows Hello for Business" has to be set to "not configured".
From my research, a user cannot create a convenience PIN in Windows 10 Version 1607 and later version when the Use Convenience PIN and Use Windows Hello for Business policies are both enabled unless the device is joined to Azure Active Directory in some way.
Do not configure settings other than PIN complexity if you want to use a convenience PIN. Having Windows Hello for Business and Turn on convenience PIN sign-in enabled prevents you from setting a PIN.
For you reference:
https://learn.microsoft.com/en-us/troubleshoot/windows-client/user-profiles-and-logon/cannot-configure-a-convenience-pin
Hope above information can help you.
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