Fix Windows Defender Not Starting Due to Antivirus Conflict
You open Windows Security and see a message that Defender is turned off or not starting. The most...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listRemote Desktop Proxy Error Checklist: 10 Common Fixes
If you're seeing a proxy error when trying to connect to a remote desktop, you're not alone. Thes...
How to Temporarily Turn Off Windows Security for Troubleshooting
If you're troubleshooting a stubborn app or driver issue, Windows Security (formerly Defender) mi...
Fix Task Scheduler Error 0x80070020: Port Already in Use
When you see error 0x80070020 in Task Scheduler with the message "port already in use," it usuall...
Fixing Windows Security Connection Timeout Error 0x800705b4
If you see error code 0x800705b4 when opening Windows Security or trying to run a scan, it usuall...
How to Fix Microsoft Teams Network Error
You're in a call or trying to send a message, and Teams shows a network error. The app may freeze...
Topic paths
Quick titles
Fix Windows Login Loop with Command Prompt in Safe ModeHow to Fix Windows Defender Error 0x80070005Fix Windows Defender Not Opening Error 404Fix OneDrive Sync Crash Loop on StartupWindows Update Login Loop 0x80070002 TroubleshootingFix Microsoft Store Connection Refused DNS ErrorHow to Delete Outlook Offline Data FileChrome SSL Protocol Error Troubleshooting Guide