If you’ve used the Mailbox Cleanup tool to look at the size of your Outlook folders, you might have noticed three (or sometimes four) folders starting with “Sync Issues.” You can empty the “Sync Issues/Conflicts” folder with the Mailbox Cleanup tool, but that still leaves the others. Let’s take a look at how to access them, what they’re for, and whether you can—or should—delete their contents.
If you’ve never used it before, check out our guide to using the Mailbox Cleanup tool. Its View Mailbox Size feature shows you the size of all of the folders in Outlook. Scroll down towards the bottom of the list to find the Sync Issues folders.