NOTE: I’m running Windows 10, with no intention of uprgrading to 11 until 10 is phased out. YMMV. Also note that in order to see your changes on the Pane, you will have to refresh, close all instances of Windows Explorer, or restart. Usually refresh or close will be all you need.
I have a Dropbox, One Drive, Creative Cloud, AND a Google Drive. Each of these is displayed in the Navigation Pane. I also have them in my Quick Access. I don’t like redundancy, and I do like granular control of my shortcuts, so I decided to figure out how to remove these all from my navigation pane, and keep them exclusively in Quick Access. Back to the registry! Certain keys in the CLSID folders are associated with different folders, and have a System.IsPinnedToNamespaceTree key. Set this hex value from 1 to 0 and you effectively remove it from the Navigation Pane. As always, I take no responsibility for damage caused to your system. Like my last article, where I showed how to adjust This PC’s display, there are two places in the registry that need the same treatment: a 64-bit path, and a 32-bit path.
Note: I don’t know if these mappings are static or not. I think they are, but haven’t checked. If not, you can simple walk down the list, looking at the (Default) key, which is a string with the name of the item in question.
Creative Cloud Files
As before, there was jump-off article that allowed me to determine how to do this.