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Fix Windows Update Connection Refused Due to Proxy Settings - How to Reset Windows Defender Cache in Windows 10-Windows Defender Failed to Start – Group Policy Fix

2026-06-14 01:40:19
Fix Windows Update Connection Refused Due to Proxy Settings - How to Reset Windows Defender Cache in Windows 10-Windows Defender Failed to Start – Group Policy Fix

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

Next references

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