MS Exchange 2010 SP2 running Update Rollup 6 for Exchange Server 2010 Service Pack 2 (KB2746164). This is the current version and update.
Windows Server 2008 R2 Standard for OS.
No event logs occur when accessing ECP otherwise we would post them here.
ECP does not work internally or externally.
We have rebooted the server and restarted MS Exchange and IIS services.
Recently we discovered http://mail.domain.com/ecp is no longer working. When logging into http://mail.domain.com/owa everything works. We can check email, browse the calendar, etc. Just when we click Options->See All Options a.k.a ECP we run into issues. The page loads and the links on the left show up (Account, Organize E-mail, Groups, Settings, Phone, Block or Allow) but nothing loads (See Screen Shot). Here is what we have tried:
1. MS Exchange Management Console->Server Configuration->Client Access->Outlook Web App + Exchange Control Panel. Reset Virtual Directory on both of these then iisreset. Once reset, we updated the Internal URL/External URL settings prperly. OWA Authentication is Use forms-based authentication, User name only with the domain. ECP is Use forms-based authentication.
2. IIS->Default Web Site->ecp. Authentication is set to Anonymous Authentication and Basic Authentication enabled. When editing the Basic Authentication the default domain is set properly.
3. Reviewed the MSExchangeECPAppPool and compared all the settings to another functioning MS Exchange Server 2010 SP2 server. Everything matches.
4. CMD->C:\windows\system32 then ran lodctr /R
This appears to be a Microsoft special. Any help would be greatly appreciated!
I have read over all the links on this site related to ECP issues and tried to various changes but no luck.