This... worked for Windows 10.

I deleted:
Code:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderTypes\{ef87b4cb-f2ce-4785-8658-4ca6c63e38c6}\TopViews\{00000000-0000-0000-0000-000000000000}
I have no idea what I have broken/fixed and what will the consequences be. But hey... it works for now.