Windows Defender Real-Time Protection Won't Turn On: Fixes - How to Stop Redirect Loop with Cloudflare SSL-Fix Jupyter Kernel Failure Post-Update

Updated 2026-06-13 13:45:09windows-fixes
Windows Defender Real-Time Protection Won't Turn On: Fixes - How to Stop Redirect Loop with Cloudflare SSL-Fix Jupyter Kernel Failure Post-Update
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.