Im having troubles authenitcating OWA from a single PC. I am able to access OWA from other PC's with same credentials. I have tried using different browsers and same result. Any suggestions? I have tested on another computer outside the domain with this user name and it worked on that PC. I have deleted all temp files and passwords. All to the same result. This is a Windows 7 starter PC and exhange that works for everyone else is 2003. Please help!!!!