Fix Windows Defender Missing After Update
After a Windows update, some users find that Windows Defender is missing from the system tray, Se...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Microsoft Teams Installation Error 0x80070005
You try to install Microsoft Teams but get error 0x80070005. This usually means the installer can...
Fix Windows Update Service Not Starting Due to Permission Denied
You click Start for the Windows Update service, and it fails with “Permission Denied” or error 5....
How to Fix 'Permission Denied' When Setting Up Outlook with Admin Rights
You're installing or configuring Outlook, you're logged in as an administrator, and you still get...
How to Fix Windows Defender 'Command Not Found' Error
You open Command Prompt to run MpCmdRun.exe or Get-MpPreference and get...
Troubleshoot 504 Gateway Timeout in Windows Security App
When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...
Topic paths
Quick titles
Windows Security Service Repair GuideFix 'could not find spec for crate' Error in Cargo BuildTroubleshoot Windows Terminal High CPU UsageFix Windows Update Cleanup Permission Denied ErrorHow to Fix Outlook Token Expired with Modern AuthHow to Fix Outlook Proxy Blocking EmailFix Microsoft Teams Update Stuck on Mac: Practical StepsResolve PowerShell Path Error Windows