This is a historical report about the named KB and a bounded pause/resume operation in Windows Update settings.

  • KB5050009 remained at zero percent or failed with access denied.
  1. Paused Windows Update, then resumed/scanned for updates again.

Reported outcome: The author reports the update installed successfully.

Resume scanning promptly and verify the installed-update result. This is not a reason to leave security servicing paused when the error persists.