Upgraded last Friday to OSX 10.9.2. After upgrade as done I received the message from Outlook at start up that I have to rebuild the Main Identity using the MS Data Base Utility. Rebuilding the database took approx 20 min and it returned with the message: Your database couldn't be rebuild (-18000).

I restored the latest non corrupted file from Time Capsule in Documents/Microsoft User Data/Office2011 User Identities/Main Identity and tried to rebuild from there. No succes. It kept coming back with the same error message Your database couldn't be rebuild. 

I'm out of email since Friday and have to rely on horrible webmail. Has anyone suggestions how to resolve.