Just worked on a test(luckily) Exchange 2010 server with a customer. When they opened the Exchange Management Console, the Server Configuration was missing and they couldn’t change the properties of any the mailboxes. When they opened the mailbox properties they saw these little lock symbols all over the place.
When they ran the command “Get-Mailbox” in the Exchange Management Shell, they only saw a single mailbox.
So we tried all sorts of things. Then they mentioned the installed Outlook on the server and set it up to access a mailbox. Just happened to be the I tried deleting the mail profile, uninstalling Outlook, logging off and back in, no dice. Then I found out that Windows caches credentials and you have to clear those out using the below procedure:
- Open a command prompt using “Run as Administrator”
- Run the command “control keymgr.dll”
- Click “Back up vault” and follow the prompts to back everything up.
- Find and remove all credentials that have to do with Exchange or the user setup for Outlook.
After that everything returned to normal.
So if you want Outlook on an Exchange server use OWA.