zhizhu
Home / office-tools / Fix Windows Update Access Denied: Run as Administrator - Windows Defender 0x80070020 Troubleshooting Guide-Set Windows Update Service to Run as Local System Account

Fix Windows Update Access Denied: Run as Administrator - Windows Defender 0x80070020 Troubleshooting Guide-Set Windows Update Service to Run as Local System Account

Updated 2026-06-13 12:57:58office-tools
Fix Windows Update Access Denied: Run as Administrator - Windows Defender 0x80070020 Troubleshooting Guide-Set Windows Update Service to Run as Local System Account
Best fit
Decision rule
Switching note

Decision checklist

  • Match the tool to the workflow that fails most often, not only the feature list.
  • Keep export format, permissions, and automation limits in the final decision.

More comparison notes

Fix OneDrive 'Permission Denied' Sign-In ErrorsFix Windows Update Service Permissions: Access Denied ErrorFix Windows Update Connection Timeout Due to Proxy SettingsHow to Fix MongoDB Compass Connection Refused on WindowsHow to Fix Chrome Remote Desktop Connection IssuesFix Windows Defender Stuck Loading Service Not Running