How to Clear Windows Security Cache: Setup & Steps - How to Resolve Windows Defender Error 0x80070643-Repair PowerShell Installation via DISM

Updated 2026-06-14 01:37:08security-tools
How to Clear Windows Security Cache: Setup & Steps - How to Resolve Windows Defender Error 0x80070643-Repair PowerShell Installation via DISM
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.