Regedit HKEY_CLASSES_ROOT\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6} You’ll see a DWORD entry labeled System.IsPinnedToNameSpaceTree set to a value of 1 (one). To remove OneDrive from File Explorer in Windows 10, go ahead and double-click on that DWORD and set its value to 0 (zero). Click OK to save your changes and then close the Registry Editor. Restart computer Source: https://www.tekrevue.com/tip/remove-onedrive-file-explorer-sidebar-windows-10/