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Fix Putty Connection Refused Due to Windows Firewall - How to Resolve 502 Bad Gateway After Reboot-How to Fix Java Not Recognized in Windows 10 Command Prompt

Updated 2026-06-13 19:32:47developer-tools
Fix Putty Connection Refused Due to Windows Firewall - How to Resolve 502 Bad Gateway After Reboot-How to Fix Java Not Recognized in Windows 10 Command Prompt
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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