On the screen that comes up, make sure “Type” is set to “Allow” (should already be). In the “Principal” column, you should see your own User account listed – hopefully just once. Near the bottom, click “Disable Inheritance.” On the dialog that comes up, choose the first option: “Convert inherited permissions into explicit permissions on this object.”Ĥ. Near the bottom of the Permissions window, click “Advanced.”ģ. In the registry editor, in the folder structure on the left, right-click Common and choose Permissions.Ģ. I wrote a guide for some friends, so I'll paste the relevant steps here. So I ended up setting the current key only (excluding subkeys) to read-only, while keeping full privileges for subkeys.

I think there are some subkeys that office *needs* to be able to change or else it screws it up (recent file locations perhaps?). Well, just changing the entire Common folder to read-only ended up causing some other problems for me later - namely, Office would crash any time I tried to go to the File menu, or hit Ctrl+O to try to open a file, etc.

Outlook 2016 dark theme registry