How to Fix Cloudflare SSL Full Strict Self-Signed Certificate Error - Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking-Fix ERR_NAME_NOT_RESOLVED with ipconfig /flushdns in Chrome

Updated 2026-07-28 13:20:31
How to Fix Cloudflare SSL Full Strict Self-Signed Certificate Error - Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking-Fix ERR_NAME_NOT_RESOLVED with ipconfig /flushdns in Chrome
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.