In Microsoft Outlook, you discover that the server count and offline item count for a particular folder do not match. The following screen shot illustrates this issue.
This issue occurs when a synchronization filter is configured for a folder.
If you no longer require the filter or if you did not mean to enable it in the first place, follow these steps to remove the filter:
- In the details pane in Outlook, right-click the folder, and then click Properties.
- Click the Synchronization tab, and then click Filter.
- Click Clear All, or adjust the filter criteria as needed.
Be aware that while Outlook is in Offline mode, the synchronization filter process does not work.