I have no idea why or what I have broken in the process. But here is what worked for me. 1. Ctrl+Shift+Right-click on an empty part of the taskbar and clicking "Exit Explorer" (or kill it via Task Manager if that doesn't work). 2. Delete this registry key. >HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderTypes\\{ef87b4cb-f2ce-4785-8658-4ca6c63e38c6}\TopViews\\{00000000-0000-0000-0000-000000000000} 1. Start process `Explorer.exe` via Task Manager. **This is one of many answers posted here. Feel free to try other people's suggestions.** If you combine all answers in one I'll accept your answer. [![enter image description here][1]][1] ---------- **Method for Creator's update** Check out [this][2] answer. [1]: https://i.sstatic.net/bqZyX.jpg [2]: https://superuser.com/a/1208858/93640