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How to Resolve Cloudflare Origin Certificate Chain Issues - School Chromebook Chrome Sync Not Working? Try These Fixes-Fix NET::ERR_CERT_AUTHORITY_INVALID on Windows 10

Updated 2026-07-28 13:00:08macos-help
How to Resolve Cloudflare Origin Certificate Chain Issues - School Chromebook Chrome Sync Not Working? Try These Fixes-Fix NET::ERR_CERT_AUTHORITY_INVALID on Windows 10
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.

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