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How does one remove the Dropbox link from the Navigation Pane om Windows 10?
I don't notice it on Win8.1, but I have already hacked out a bunch of stuff in the registry on Win8.1. I have the Dropbox folder conveniently located in the root of a second hard drive, I don't need ...
Okay, I think I figured out how to do it. There's only one key value that you have to change, but you also have to change its permissions so that Dropbox won't change it back.
First you have to go to:
HKEY_CLASSES_ROOT\CLSID\{E31EA727-12ED-4702-820C-4B6445F28E1A}
And set the System.IsPinnedToNamespaceTree value to 0.
This will remove it from the File Explorer's navigation pane.
Afterwards, you'll need to prevent Dropbox from changing the value back.
To do this, right click the {E31EA727-12ED-4702-820C-4B6445F28E1A} key and then click Permissions. Click Advanced, and then click Add. In the dialog box that appears, type Everyone, and then click OK. Change the type to Deny, and make it apply to This key only. Click Show advanced permissions, and check the Set Value box.
Afterwards, click OK and Dropbox should no longer be able to modify that value. Hopefully Dropbox or Microsoft will make this kind of thing easier someday.
Maybe someone is still interested in it, so here is a solution that even works after a restart (at least it keeps working for me after several restarts). It's already explained here, the main trick is the one that Nik mentioned but it seems rather non-obvious so I would like to sum up both steps:
1. Change the value 'HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{E31EA727-12ED-4702-820C-4B6445F28E1A}\System.IsPinnedToNamespaceTree' to 0. This should hide the icon, but it still will come back since Dropbox automatically resets the value back to 1 after a restart.
2. To avoid the automatic resets, right click on the folder '{E31EA727-12ED-4702-820C-4B6445F28E1A}' in the left part and select 'Permissions...' and simply disallow the full access. As soon as you hit OK this should hide the folder's content in the registry, if you want to see the content again, re-allow the access (but this also allows Dropbox to reset the value and hence, to show the icon again).
The second part is the main trick here, thanks to Nik!
