reactos/dll/win32/shell32/res/rgs/shellfiledefext.rgs

HKCR
{
	NoRemove CLSID
	{
		ForceRemove {21B22460-3AEA-1069-A2DC-08002B30309D} = s 'File Default Extension'
		{
			InprocServer32 = s '%MODULE%'
			{
				val ThreadingModel = s 'Apartment'
			}
		}
	}
}