I have recently upgraded our Exchange Server from WinNT 4.0 to Windows 2000. We never had the OWA installed or IIS on this machine for that matter until just recently. I installed IIS, OWA, and Exchange SP4. I can login to everyone's email via OWA on the Exchange Server using IE with no problem and also using Netscape 6 on a client machine but I can't when trying to access OWA on a client box using IE? That seems weird that I can use Netscape from any machine, and IE on the Exchange Server itself but IE won't work on any other client machine? Can someone help with this problem. I am using Basic Authentication, so when IE pops up the login prompt, I do like with Netscape, put the domain/username and then password but it is returned 3 times and then says Not Authorized. I have been playing with these Local Policy's, mostly Log on Locally, etc but I can't seem to get anything to work consistenly. The Primary Domain controller is a separate box. Thanks for any help!!!