Entra "Password does not meet policy requirements" error. Sigh

Just in case anyone else runs into this:

On attempting to change password, Entra gave a user "Password does not meet policy requirements" error.

After I chasing the obvious password policy issues, ChatGPT susggested looking at Entra admin center > Password reset.

Previous MSP set it to selected, but with no group, so SSPR was effectively disabled.

Thanks Microsoft for providing an unhelpful error message.

Changing the selection to 'All' fixed it.