On Unity 4.x the admin page always gives an error: "the page cannot be displayed." This is on a win2k3 server with SP1. Exchange is on box. Everything was working until Yesterday, no one knows if anything was changed. All other Unity functions work and subscribers are able to access their page.
I'm logged in to the server with the UnityAdmin account. Two other accounts with admin rights get the same error. Using the Global Subscriber Manager gets the same error: "the page cannot be displayed." I checked the host file and DNS entries, all good. I reset the WWWP, IIS Admin services, iisreset and the Default Web Site. Still no change. Other than rebooting Unity, where else can I look? Thanks.