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Home / windows-fixes / PowerShell Authentication Failed: Practical Fixes - Fix Windows Terminal Version Mismatch Errors-Windows Defender Version Mismatch Fix (0x80070643)

PowerShell Authentication Failed: Practical Fixes - Fix Windows Terminal Version Mismatch Errors-Windows Defender Version Mismatch Fix (0x80070643)

Updated 2026-06-14 12:42:31windows-fixes
PowerShell Authentication Failed: Practical Fixes - Fix Windows Terminal Version Mismatch Errors-Windows Defender Version Mismatch Fix (0x80070643)
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.