After upgrading from Office 2007 Pro to 2010 everything initially seemed fine. After only a couple of days however, Outlook stopped sending emails. I can receive emails and notifications from calendar events are working.
Whenever I try to send an email, a msgbox appears saying only "The operation failed". I have tried repairing the Office installation and rebuilt my inbox, but I still cannot send any emails. The only person that I can send an email to is myself, which is not of much use!
I don't know if it's related or not, but I have no contacts listed when I click 'Check Names' either. There used to be plenty there. Now there's absolutely nothing listed. Everything else about Outlook (and Office 2010 Pro for that matter) seems to be working as it should.
Does anyone know how I can fix this?