Outlook Calendar Error : Can’t open this item. The object couldn’t be found.

Reason: Outlook uses forms for everything. Sometimes these get corrupt and need to be rebuilt.

Resolution:

1. Close outlook
2. Open the user’s profile c:\documents and settings\<user ID>
3. search for the “FRMCACHE.DAT” (Choose to search hidden and system files options as well)
4. From the search results, delete the file FRMCACHE.DAT
5. Restart outlook