Hello I have a single ex2k7 SP3 on Win2K3 which I am trying to gradually upgrade to Win2K8R2/Ex2k10. The plan is to
move everything from server A to interim Server B
make sure all works fine entirely on server B
Kill server A, rebuild from scratch and move everything back to server A
My problem is with OWA on server B.
Server B is Win2K8 Standard with all the latest SP and patches and Ex2K7 SP3. I have moved all the mailboxes, configured all the roles (CAS/Mailbox), installed certificate. Everything is fine, except that when I go to OWA (externally) I get the login page, I enter username and password and nothing happens. It won't show me an error. It just stays where it is. I can see it is sending data to the server (from the browser's toolbar). It takes its sweets time and then does nothing.
I figured out the problem, in case this happens to anyone else. The problem was with the HTTP redirect in IIS 7. I had configured it wrongly, so everything was always going to https://example.com/owa, so after login, when another page was trying to load, IIS would redirect all requests back to /owa.
Silly mistake, but we all have to learn somehow. Hope this helps someone else.