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Home / windows-fixes / Clear Windows Update Cache via Command Line - Windows Security Error 0x80070643 on Dual Boot-Windows Security Not Working After Update – Fix Guide

Clear Windows Update Cache via Command Line - Windows Security Error 0x80070643 on Dual Boot-Windows Security Not Working After Update – Fix Guide

2026-06-13 14:10:38
Clear Windows Update Cache via Command Line - Windows Security Error 0x80070643 on Dual Boot-Windows Security Not Working After Update – Fix Guide

Result check

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

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