How to Fix Windows Defender Service Not Running
If you see a message that Windows Defender is not running or the security center shows it's off, ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix OneDrive Error 0x8004de40: Sign-In Issues
When you try to sign in to OneDrive and see error code 0x8004de40, the app usually stops syncing....
Fix Windows Defender Update Failed Errors
When Windows Defender fails to update its virus definitions, you may see error codes like 0x80240...
Fix Microsoft Teams Access Denied Error Code
If you see an "Access Denied" error code when trying to open Microsoft Teams or join a meeting, i...
How to Configure Task Scheduler Rate Limits
When you have tasks that run too frequently, they can overwhelm system resources or trigger throt...
Fix Windows Update Error 0x80070020: Port Already Allocated
When you see error 0x80070020 during a Windows Update, it usually means a program is already usin...
Topic paths
Quick titles
Microsoft Store 504 Gateway Timeout TroubleshootingHomebrew Installed ffmpeg but Command MissingWindows Defender Port Already in Use FixChrome DLL Conflicts on Windows 10 – How to FixTroubleshooting DNS Issues in Outlook ConfigurationTroubleshooting Windows Defender Crashes Due to Other AntivirusResolve Chrome Profile Not Found IssueMicrosoft Store Stuck on Loading? Here's the Fix