i got a strange issue with Exchange 2010 on a MWS 2008 r2 machine.
The Admnistrator account SUDDENTLY lost permissions to access any functionality of Exchange: PS, EMC, even Outlook on the same machine!
To solve the problem I initially created another admin account to manage everything, as I already meant to do. So, for now, it doesn't stand.
But having this issue on the main admin account keeps me awake at night!
The misfunction keeps changing behaviour!
I explain: sometimes I open the EMC console and when i click on the first menu i get an error on the right saying: "Access Denied: wrong user name or password", other times I CAN SEE THE MAIL BOXES, the server configuration menu is hidden, but I can do nothing! not even open mailbox properties (The properties window opens, but with no folder menus and all the lines show a tiny yellow lock on the right).
It also happened, two days ago, that i couldn't access EMC so I batch restarted all services, without logging off the Main Admin account, I reopened EMC and everything worked fine for a while. Then again: only read-only access, then nothing more! Access Denied!
I tried recreating Admin mailbox, still nothing, then I opened Outlook on the same machine (w/o caching) and it threw some popup errors like: "Can't open window, Exchange server offline", while the new admin user and the others have no problems at all!
I can open Outlook on the new admin, add the Main Admin account, it asks the user and passwords for it, i put them in and it works! But if i try the same, but logged on with the main admin account, it doesn't work!
Everything else work perfectly on the Main Admin account: no problem with files, policies, domain management, sql... for now.
This problem seems to affect only the Main Admin while operating on EXCHANGE!
While the same Main Admin credentials seem to work perfectly when I'm logged with another Admin user, even on Exchange! (SO FAR, I'm still testing).
I checked permissions on the main admin account and they're all right! Admin rights appears everytime i query ps or the dc.
I've checked many similar issues on many forums. Everything seems ok BUT IT DOESN'T WORK!
WHY? what am I missing?
THANKS FOR HELP