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MongoDB Authentication Failed Sync Issue Between Nodes - How to Resolve Windows Security 404 Not Found-Windows Activation 502 Error Firewall Fix

Updated 2026-06-13 17:02:07windows-fixes
MongoDB Authentication Failed Sync Issue Between Nodes - How to Resolve Windows Security 404 Not Found-Windows Activation 502 Error Firewall Fix
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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