A. A. If a user is a member of the Domain Guests group then no changes to profiles are stored, therefore you should check the members of the Domain Guests group do not include those users that are having the problem.
Join John Savill for 9 hours of comprehensive PowerShell training. This course will start from the ground up, walking through the basics of PowerShell, how to create basic scripts, and building toward creating custom modules to achieve amazing results in your environment, in non-Microsoft environments, and in Azure.