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Fixing 'Access Denied' Errors When Running PowerShell Scripts - Fix PowerShell Connection Refused Due to Firewall Rules-Windows Defender 404 Not Found Registry Fix

2026-06-18 10:33:54
Fixing 'Access Denied' Errors When Running PowerShell Scripts - Fix PowerShell Connection Refused Due to Firewall Rules-Windows Defender 404 Not Found Registry 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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