One such example is an error plenty of users have reported where they receive the following error: This error usually appears when an Outlook messaging profile includes a Microsoft Exchange account that is configured to use Cached Exchange Mode. Additionally, it also happens when the Download Public Folder Favorites option is enabled, and you have lots of cached public folders. As such, if you have around or more than 1,000 public folders, or when the cached public folders consume one gigabyte of space, you should be expecting similar error messages. This error is bound to appear at one point or another, so we’ve created this step-by-step guide that will show you exactly what you need to do to get rid of the issue.

How do I solve the folder expansion error in Outlook?

1. Disable the  Download Public Folder Favorites option

2. Delete the Download Public Folder Favorites folders

2.1 Delete all the Download Public Folder Favorites folders 2.2 Delete only certain Download Public Folder Favorites folders By following these steps, you should be able to fix any folder expansion error that you may encounter in Outlook. If you know of any other way to solve this problem, share it in the comments section below so that other users can try it, as well.

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