I use XP Pro SP3 and have noticed repeated batches of the error Userenv Event error 1041 in Event Viewer. The error Properties are 'Windows cannot query DIIName registry entry for CF7639F3-ABA2-41DB-97F2-81E2C5DBFC5D and it will not be loaded. This is most likely caused by a faulty registration'. Scrolling using the arrow reveals a 2nd GUID: 7B849a69-220F-451E-B3F3-2CB811AF94AE. I have searched the Registry for both of these and drawn a blank. The existence of the error has no discernible effect on the operation of the computer but I would like to eliminate the error message if possible. The link to MS support does not help as searching it draws a blank for this error number Userenv. A general search for Userenv error 1041 in Google does produce some results but the solutions are far too complex for a non-specialist and seem to relate to Group policy on a network. I do have a laptop with Vista Home Premium networked through my modem router. Local Area Connection shows no problems in operation. Would be grateful for any advice on this matter.