This feature requires you to use a Microsoft Exchange Server 2000, Exchange Server 2003, or Exchange Server 2007 account. Most home and personal accounts do not use Microsoft Exchange. For more information about Microsoft Exchange accounts and how to determine which version of Exchange your account connects to, see the links in the See Also section.
The synchronization issues folders contain logs and items that Microsoft Office Outlook has been unable to synchronize with your mailbox on the server running Exchange. There are four synchronization issues folders that appear in the Navigation Pane (Navigation Pane: The column on the left side of the Outlook window that includes panes such as Shortcuts or Mail and the shortcuts or folders within each pane. Click a folder to show the items in the folder.) when you view the Folder List (Folder List: Displays the folders available in your mailbox. To view subfolders, click the plus sign (+) next to the folder. If the Folder List is not visible, on the Go menu, click Folder List.).
- On the Go menu, click Folder List.

The following describes the four folders and the items you may find in each folder:
Sync Issues Contains all of the synchronization logs. In Microsoft Outlook 2002 and earlier, these logs were stored in the Deleted Items folder. This folder is helpful if Outlook is having trouble synchronizing — for example, there is an item that you see in Outlook Web Access (Outlook Web Access: If you are away from your computer, or if you share a computer with other people, you can use Outlook Web Access to gain access to your Microsoft Exchange server information securely from any browser.), but not in Outlook — or you are not getting new mail in some folders when using Cached Exchange Mode.
The information in this folder may help your organization's support team or Exchange server administrator determine what is wrong. The contents of the Sync Issues folder are not copied to your server, and you cannot view the items in the Sync Issues folder from any other computer.
Conflicts Contains all the multiple copies of conflicting items in your mailbox (mailbox: Location on a Microsoft Exchange server where your e-mail is delivered. Your administrator sets up a mailbox for each user. If you designate a personal folder file as your e-mail delivery location, messages are routed to it from your mailbox.). An InfoBar at the top of the original item advises you that a conflict for this item exists. The conflicting item is stored in the Conflicts folder. Clicking the InfoBar will bring up a list of conflicting items and allow you to resolve the conflict by determining which item you want to keep.
If you have made changes to an item, but are not seeing the updated item in your Navigation Pane folders, check for an InfoBar notice at the top of the item. If you cannot find the original item, check the Conflicts folder. It is possible that your changes caused a conflict with the original item, and the changes will exist in the Conflicts folder.
Local Failures Contains all items that could not be sent to your server. If you have made changes to items while working offline, and then notice that your changes are not appearing in another Outlook client or Outlook Web Access, you should check this folder.
The local changes may be permanently stuck in your Local Failures folder. An InfoBar appears at the top of any item that has another copy of the item stored in the Local Failures folder. Clicking the InfoBar opens the Local Failures folder for you in a separate window.
You can only see these items when you are offline or using Cached Exchange Mode and you cannot view them from any other computer.
Server Failures Contains items that Outlook failed to synchronize from your mailbox on the server running Exchange . When Outlook cannot synchronize the item from the server, it moves it from its original folder location into the Server Failures folder. The contents of this folder are available only when you have a connection to your server.
If you are missing a message that has been sent to you, and you have verified with the sender that the message was sent, check this folder. Items normally appear in this folder only when there are failures in synchronizing server items with an Offline Folder file (.ost) (Offline Folder file: The file on your hard disk that contains offline folders. The offline folder file has an .ost extension. You can create it automatically when you set up Outlook or when you first make a folder available offline.), which is used when you work offline or use Cached Exchange Mode. An InfoBar appears at the top of any item that has another copy of the item stored in the Server Failures folder. Clicking the InfoBar will open the Server Failures folder for you in a separate window.
Note If you use the Offline Folder file (.ost) Integrity Check tool (Scanost.exe) to fix synchronization errors, the scan logs that are generated can be found in Deleted Items.