We had a user who installed IE 10. This messed up the users access to SharePoint 2010 sites. Then we removed IE 10, but in IE 9 the user still has a couple of Ribbon buttons that she used to use in SharePoint (with IE 9) that are now disabled. This started after going back to IE 9. The disabled buttons are the Datasheet View and Open with Explorer.
We checked to make sure that the datasheet view was enabled in the library. Then logged in as another user on the same computer and both buttons showed as enabled for the other user. Any ideas on how to fix this?