I've tried to install these updates numerous times? Is anyone from microsoft there? I've never got a response from these. 9 results for "WindowsUpdate_00000646" "WindowsUpdate_dt000" 1. 1 Windows Update error 80072efd 2. 2 Troubleshoot problems with installing updates 3. 3 Windows Update error 80070422, 80244019, or 8DDD0018 4. 4 Windows Update error 8024402C 5. 5 Windows Update error 80070003 6. 6 Windows Update error 80070643 7. 7 Windows Update error 8024001b 8. 8 Windows Update error 800f020b 9. 9 Windows Update error 800f0828