Fix Windows Defender Real-Time Protection Keeps Turning On - Windows Defender Scan Not Completing? Here's What to Do-Troubleshooting Error 0x80070643 in Windows Defender

Updated 2026-06-13 12:42:16browser-issues
Fix Windows Defender Real-Time Protection Keeps Turning On - Windows Defender Scan Not Completing? Here's What to Do-Troubleshooting Error 0x80070643 in Windows Defender
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.