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Home / windows-fixes / Fix Windows Defender Update Error 0x80240034 - How to Fix Go Proxy Host Lookup Failure-Fix "Permission Denied" for Windows Terminal JSON File

Fix Windows Defender Update Error 0x80240034 - How to Fix Go Proxy Host Lookup Failure-Fix "Permission Denied" for Windows Terminal JSON File

Updated 2026-06-13 14:54:02windows-fixes
Fix Windows Defender Update Error 0x80240034 - How to Fix Go Proxy Host Lookup Failure-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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