How to Fix Edge Update Error 0x80070643 - Fix Windows Update Error: Port Already Allocated-Fix 0x80070422 in Windows Defender: Step-by-Step

Updated 2026-06-13 16:41:41macos-help
How to Fix Edge Update Error 0x80070643 - Fix Windows Update Error: Port Already Allocated-Fix 0x80070422 in Windows Defender: Step-by-Step
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.