Hello
Thank you for posting in Microsoft Community forum.
The link below may be helpful.
Minimum Password Length auditing and enforcement on certain versions of Windows - Microsoft Support
Or you can enable FGPP in the domain.
Step-by-Step: Enabling and Using Fine-Grained Password Policies in AD
Step-by-Step: Enabling and Using Fine-Grained Password Policies in AD | Microsoft Learn
I hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Daisy Zhou