Windows Update Cannot Connect: Step-by-Step Checklist - Windows Security Failed to Start: Fix Corrupted Files-Resolving Docker BuildKit Cache Failures

Updated 2026-06-14 12:00:24windows-fixes
Windows Update Cannot Connect: Step-by-Step Checklist - Windows Security Failed to Start: Fix Corrupted Files-Resolving Docker BuildKit Cache Failures
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.