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How to Fix Windows Update Authentication Failed Error - Windows Terminal 504 Error: DNS Cache Clearance Guide-Fix Gradle Build: Could Not Find or Load Main Class

Updated 2026-06-14 01:43:25developer-tools
How to Fix Windows Update Authentication Failed Error - Windows Terminal 504 Error: DNS Cache Clearance Guide-Fix Gradle Build: Could Not Find or Load Main Class
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.