Fix Cloudflare 525 Error After SSL Certificate Update - Windows Defender Error 0x80070643: Troubleshooting Guide-Windows Search Connection Timeout Checklist

Updated 2026-06-13 20:15:23browser-issues
Fix Cloudflare 525 Error After SSL Certificate Update - Windows Defender Error 0x80070643: Troubleshooting Guide-Windows Search Connection Timeout Checklist
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.