A few days ago, i found a particular variant of error "User Profile Service service failed the logon. User profile cannot be loaded. This occurs with first users logon. "And say "particular" because the documented solutions about this error cant fix the issue. But the solution was in my eyes all the time. You only need to read the events details.
There are a lots articles about this error, but this issue variant is untypical.
After check Windows Event Viewer, i found the following error:
You need to verify warning events and then you will find the details that will help you to fix the issue.
The issue occurs because Windows does not has security rights to a folder specified in the Default profile. To fix it, you must modify the security rights into folder specified in the event. If you does not have any information about this folder, you must run an antimalware and later delete the folder .