We recently switched over to Windows 2000 server with Active Directory. We are randomly having users lose their file associations with Microsoft Office products..most specifically Excel 2000. The only thing we know that is consistent between the users is that they have been prompted (right before this happened) to change their passwords. (I realize that this doesn't sound like it could have anything to do with it but it is the only common link we've found.) Some users are able to reassociate their files with "open with" and everything is fixed but most users have to do a reinstall of Office. Any idea what could be causing this..or how to fix it on the masses before it becomes a REAL problem? THANKS!