How to empty Outlook folders?

1 Select "Folder" view at the bottom left of your Outlook window

2 Right click on the Folder

3 Click on "Config CalDAV Sync"

4 Set "Synchronize every" to "Sync disabled"

5 Click on "Save"

6 Left click on the Folder

7 Click on "View"

8 Click on "Change View"

9 Select "List"

10 Select all entries with "Ctrl-a" and then right-click on them and choose "Delete" from the context menu

You need to repeat these steps for all Calendar, Contact and Tasks folders that are synced by cFos Outlook DAV.