Unable to expand the folder. The set of folders could not be opened. The operation failed.
Posted on 2004-11-05
When I add a mailbox using the Tools > Services > Exchange > Properties > Advanced, I keep getting an error message in the Folder View that says "Unable to expand folder. The set of folders could not be opened. The operation failed." But if I go through File > Open > (whatever mailbox), it works that way. I have set the appropriate permissions on the mailbox I'm trying to access, and Microsoft's knowledge base says to make sure the "Folder Visible" option is checked, which it is, but I'm still having problems. Please help.
And this problem happens on certain mailboxes and not others. All my users are using Outlook 2000 and Exchange 2003 Server.