Hi!
Just wanted to shed some light on a problem I have encountered from two different customers (I work at Esri Sweden tech support).
The problem:
When starting ArcMap it will, if it is authorized, stop att "Initializing license".
When starting ArcGIS Administrator (Single Use) it will freeze when going to the Desktop -> Availability tab/folder.
If running Concurrent Use, it will freeze this way also when trying to Borrow a license or contacting the license server / changing the license server.
The cause of the problem:
The cause of the problem is that a lot of strange registry keys have been created under HKEY_CLASSES_ROOT, and if you look in Process Monitor at the process