Outlook – Inbox suddenly hidden in Outlook 2010

Sort your emails by latest date, and look for any unread items in your inbox. If you are certain no unread emails exist, mark all messages as read:

1. In the Navigation Pane, click the folder.
2. On the Folder tab, in the Clean Up group, click Mark All as Read.

Keyboard shortcut: Click any message in the message list, press CTRL+A, and then press CTRL+Q.

Make sure there are no rules enabled or set in your inbox!

This issue can happen if the mailbox is just set-up and/or the connection to your Exchange server is slow.

Something is broken or maybe just incorrectly configured.

Messages will be moved in the state they are already in (ie read or unread). You can explicitly include a step in your rules to mark them as read, but not vice-versa. Can you edit your rule to check that it is not set to mark as read every time?

Does it make a difference if the target folder is a sub-folder of your inbox (I have several set up this way and they work fine) or if it just a folder under the root of your mailbox?