This morning when I swithed on my Mac the Outlook (2011) button looked didstorted, when I clicked on ot nothing happened, tries to drag it to the desktop, now it has disappeared, cant find Outlook anywhere. Tried to install from the disk - wont do it

Is the Outlook.app in your Applications folder? Perhaps in the trash? If you look for it via Spotlight does it appear there? If you create a new user on the machine and login to the account does Outlook work? Do you a Time Machine backup of when it worked normally?

Difficult to pinpoint the exact problem at this point. What results did the new user yield? Is Outlook usable in the new user account or is it problematic there as well?

Some next steps...

1.) If it does not work in the new user then you'll want to try an uninstall and reinstall of Office.

2.) If it does work in the new user and not in your user account you'll want to consider removing Application Support files and application .plist files, restart and then uninstall/reinstall Office.

http://support.microsoft.com/kb/2398768

JasonFear wrote:

http://support.microsoft.com/kb/2398768

The process to uninstall Office is outlined in the link I provided earlier. The steps are about detailed as it can get and I think they're very easy to follow. Good Luck.