Windows 7: Outlook2007: Email folder claims to be empty

One of my mail folders has started showing up as empty, although it used to contain more than 100 messages. The screenshot shows the left-hand windows listing two new messages in the "_Terry" folder, but none showing in the folder's preview window.

All other folders, including several with names beginning with "_" are working as normal.

I have run "All Mail Items" searches, found many messages and moved them from the faulty folder to a new one but I can't delete the faulty folder because I'm certain it's not empty.

All I've tried so far is re-booting, which hasn't worked.



Any suggestions are welcome, and thanks in advance.

I'm using Windows 7 64-bit and Outlook 2007.

outlook Inbox Repair tool

How to find and run the Inbox Repair tool in Outlook

Dear Carolyn,
Thank you for the suggestion, which I am sure will bear fruit down the track.
I ran the tool and it found and fixed (it said) 77 errors but, sadly, not the error in question.
Just in case, I moved a message from my Deleted folder to the faulty folder. The message immediately disappeared from sight, but was listed in a search, as before.
However I am just about to re-boot, in case that helps after the Microsoft fix

Problem solved.
Somehow (no idea how or why) a filter was applied to the "faulty" folder. Nothing showed up when I went into the Filter dialogue box, but when I clicked Clear Filter all was restored to normal.