Active Directory Password Complexity Policy
If you see the following error message, the password complexity policy for Active Directory directory service may not have been met when a new user was created. To resolve this error, make sure that passwords comply with password complexity policies:
System.Runtime.InteropServices.COMException (0xC1003E84): A failure was encountered while attempting to set the 'unicodePwd' attribute on the newly created User object in Active Directory. Please verify that the user context under which this operation is being attempted has sufficient privileges, and try this operation again.