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Windows 11 Installation Assistant Stuck at 99% Due to Antivirus - Resolve Error 0x800f081f Using System File Checker-How to Uninstall a Windows Update in Safe Mode After a Blue Screen

2026-07-28 02:37:13
Windows 11 Installation Assistant Stuck at 99% Due to Antivirus - Resolve Error 0x800f081f Using System File Checker-How to Uninstall a Windows Update in Safe Mode After a Blue Screen

Result check

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