Reset DNS Cache Using Command Prompt Not Working: Fixes - Windows Security 502 Bad Gateway: Quick Fixes-Fix Windows Security Cache Full Error – Step by Step

Updated 2026-06-17 20:31:27security-tools
Reset DNS Cache Using Command Prompt Not Working: Fixes - Windows Security 502 Bad Gateway: Quick Fixes-Fix Windows Security Cache Full Error – Step by Step
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.