Step 1: Repair Office
1. Click start ->accessories->run->APPWIZ.CPL->ok.
2. Click on Microsoft Office -> click change-> Select Repair-> Continue.
3. Open word->Insert-> Clip Art -> expand web collection and check if you are able to view Microsoft Office Online.
If this does not resolve the issue, try the instruction mentioned in step2.
Step 2: Remove and rebuild the catalog file.
1. Close office applications and clip organizer.
2. Browse to the location
i
C:\Users\<user name>\AppData\Roaming\Microsoft\Clip Organizer. Here user name is the name of the windows user account (Vista).
ii Remove the files
mstore10.mgc and other Media Catalog File listed under the folder.
3. Open Clip Organizer and the catalog files will be recreated.