Could not install the custom actions.

Question

Please kindly help regarding outlook issue.Please see bellow error.
"Could not install the custom actions. This folder cannot be opened because there is a configuration on the server.Contact your microsoft exchange administration for assistance."
Thanks,
Eilon

Answer 1

OK, here's how we fixed this issue:
1.    
Exit Outlook.
2.    
In Windows Explorer, open the following folder (depending on your version of Windows):
Windows XP
C:\Documents and Settings\username\Local Settings\Application Data\Microsoft\Forms
Windows Server 2003, Windows Vista, or Windows 7
C:\Users\username\AppData\Local\Microsoft\Forms
3.    
Delete the
Frmcache.dat file.
4.    
Start Outlook.
I hope this helps you and anyone else who looks up this issue.
Cheers, Geoff...