Hello @SenhorDolas ,
Thanks for reaching out.
Yes, Audit mode is not supported when changing\setting passwords directly against Azure AD - Audit mode is only supported for on-premises AADPP.
For an example: when a password is changed or set against on-premises Active Directory, the password is only evaluated locally and depends on mode it Deny or Audit password. If a password is changed or set against Azure AD, then default AAD is implicitly always in "enforce" mode when it evaluates passwords.
Please let me know if you have any additional questions.
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