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Fix Windows Security Error 0x80073b01: App Install Blocked - Windows Defender Exclusions for Gaming Performance-Windows Security Won't Open? Try These Fixes

2026-06-13 15:25:17
Fix Windows Security Error 0x80073b01: App Install Blocked - Windows Defender Exclusions for Gaming Performance-Windows Security Won't Open? Try These Fixes

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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