How to Fix Error 0x80070005 in Windows Update - Fix Cloudflare 521 Error by Adjusting Firewall-Fix Git SSL Verification Failure: Local Issuer Not Found

Updated 2026-07-28 14:50:03windows-fixes
How to Fix Error 0x80070005 in Windows Update - Fix Cloudflare 521 Error by Adjusting Firewall-Fix Git SSL Verification Failure: Local Issuer Not Found
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.