Fix Windows Defender Real-Time Protection Not Working with Network Error
You open Windows Security and see a yellow warning that real-time protection is off. When you try...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Security 404 Not Found: Setup and Fix Guide
When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...
Fix Outlook Authentication Failed When Sending Email
If you get an authentication failed error when sending email in Outlook, the problem is usually a...
Fix 'Port Already in Use' Error in Windows 10 Command Prompt
When you try to start a local server or application and see Error: listen EADDRINUSE :::808...
Fix 'Task Scheduler Cannot Start Task: Port Already Allocated'
You've scheduled a task in Windows Task Scheduler, but when it runs, you see: Task Schedule...
How to Fix Windows Update Version Mismatch Error
If you see a "version mismatch" error when trying to update Windows, it usually means the update ...
Topic paths
Quick titles
How to Fix Remote Desktop Permission Denied Error 0x80070005Fix Windows Defender File Locked During ScanHow to Clear Windows Security Threat History That Won't DeletePowerShell Not Recognized Error FixTroubleshoot Windows Defender Won't Start: Registry FixSpeed Up Command Prompt Launch in Windows 10How to Access Your Home PC RemotelyReset SoftwareDistribution Folder to Fix Token Expired Error