Fix High CPU Usage by MsMpEng.exe (Windows Defender)
If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Microsoft Store Lag After a Windows Update
After a Windows update, you might notice the Microsoft Store is slow to open, unresponsive, or ta...
Windows Terminal Post-Install Checklist: 10 Essential Tweaks
After a fresh Windows install, Windows Terminal usually runs without issues, but the default conf...
How to Fix Windows Security Dependency Conflicts That Break Sync
You might see sync errors like 'dependency service or group failed to start' or 'Windows Security...
Windows Search Not Showing Results: Quick Fixes
If your Windows Search returns no results or shows an empty list even though files exist, the sea...
How to Fix Windows Security Auto Start Not Working
You expect Windows Security to start on boot, but it doesn't. The icon might be missing from the ...
Issue queue
SitemapFix Windows Terminal 504 Gateway Timeout with Nginx
Fix Windows Defender Port Already Allocated in Windows 11
Fix DNS Resolution in Windows Terminal with VPN
Windows 10 Outlook PST File Access Denied Troubleshooting
How to Fix Windows Update Error 0x800f081f
Troubleshooting 0x8007232B: KMS Key Not Found
How to Fix Windows Defender Connection Refused Error
Chrome Profile Connection Timeout: Causes and Fixes
Handle Expired Authentication Tokens in PowerShell Scripts
Resolving 'Access Denied' in Windows Security
Setup Windows Security to Avoid Port Allocation Conflicts
Fix Microsoft Store Stuck on Loading Screen
Fix Windows Defender Port Already Allocated in Windows 11
Fix DNS Resolution in Windows Terminal with VPN
Windows 10 Outlook PST File Access Denied Troubleshooting
How to Fix Windows Update Error 0x800f081f
Troubleshooting 0x8007232B: KMS Key Not Found
How to Fix Windows Defender Connection Refused Error
Chrome Profile Connection Timeout: Causes and Fixes
Handle Expired Authentication Tokens in PowerShell Scripts
Resolving 'Access Denied' in Windows Security
Setup Windows Security to Avoid Port Allocation Conflicts
Fix Microsoft Store Stuck on Loading Screen