Thanks for your reply. Is there a way to reinstall/uninstall outlook only?Re-installing Office or Outlook would seem to be the most basic thing you could try.
If there is an exchange server involved, you will need to contact whoever is running it. If this is a personal account, I suggest Microsoft support.
Thanks. how do I do this?You may see that error when the .ost has become corrupted as well. Deleting the .ost and restarting will cause Outlook to recreate it.
10 second Google search:Thanks. how do I do this?
What server you're trying to log into?The attempt to log on to Microsoft Exchange has failed.