Fix Windows Update Error 0x80070643 in Windows 11 - How to Fix Redis Connection Refused and Permission Denied Errors-OBS Black Screen with Audio Troubleshooting

Updated 2026-06-13 16:09:21security-tools
Fix Windows Update Error 0x80070643 in Windows 11 - How to Fix Redis Connection Refused and Permission Denied Errors-OBS Black Screen with Audio Troubleshooting
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.