I have a user in our exchange 2003 / wserver 2003 environment who was disabled for the past few days, but who has an exchange mailbox. Today, someone needed access to his mailbox. I thought that simply re-enabling the account, and telling the user to go to open --> other user's folder in Outlook would do it (the user has privaledges to do this), but instead they get the error "Unable to display the folder. The information store could not be opened"
On the exchange machine, 2 errors are logged in event log:
Event ID 1022, Logon Failure on database "First Storage Group\Mailbox Store (Name)" - Windows 2000 account ECOURIERUK\user; mailbox /o=XXX/ou=First Administrative Group/cn=Recipients/cn=user.
Disabled user /o=Name/ou=First Administrative Group/cn=Recipients/cn=user does not have a master account SID. Please use Active Directory MMC to set an active account as this user's master account.
Now, I looked these up and tried the fix that was suggested which was to open the user's account in AD and go to exchange advanced and ensure the self account was the "associated external account". There was nothing with this priv, so I assigned it to SELF. Then, I even went to ESM and set RUS to rebuild. Granted I haven't waited toolong, but I still get the same error messages in the event log, and I still can't logon to this user's mailbox.