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Fix Windows Defender Update Error 0x80070643 - PowerShell Authentication Failed: Certificate Fix-Windows Security 502 Error Troubleshooting

Updated 2026-06-13 21:25:46developer-tools
Fix Windows Defender Update Error 0x80070643 - PowerShell Authentication Failed: Certificate Fix-Windows Security 502 Error Troubleshooting
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  • Match the tool to the workflow that fails most often, not only the feature list.
  • Keep export format, permissions, and automation limits in the final decision.

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