Where enabling Userenv logging is necessary to see exactly what is happening with group policy and profile loading. If you have ever looked at one it can be confusing to say the least. One thing to remember is that if the logging is not enabled then do not try and interpret the log since very minimal logging is enabled by default! I am going to break this down into 2 parts with one being the Computer side and its processing then the second part of the User side and its processing. So let’s jump in and get our feet wet with some of the basics.
First, what is Userenv logging? This is short for “User Environment.” How do I enable the logging? You can reference the following KB article:
221833 How to enable user environment debug logging in retail builds of Windows
Note that Userenv logging per this article does not work on any version of Windows Vista or Windows Server 2008. It will work only on Windows 2000, 2003 or XP.