Fix Windows Security Antivirus Not Turning On
You open Windows Security and see that the antivirus is off, with no obvious way to turn it on. T...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Search Connection Refused Network Error
If you see 'connection refused' when searching network locations in Windows, it usually means the...
Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Error
When you see "ERR_TUNNEL_CONNECTION_FAILED" in Chrome, it usually means your browser can't establ...
Fix Windows Security Cache Sync Errors: Step-by-Step Guide
If you see repeated credential prompts or Windows Security not saving settings, a cache sync issu...
Fix Microsoft Store Version Mismatch: Setup Guide
You try to install or update an app from the Microsoft Store and get a version mismatch error. Th...
Fix Cloudflare 525 Error After SSL Certificate Update
After updating an SSL certificate on your origin server, you may see a Cloudflare 525 error: SSL ...
Topic paths
Quick titles
How to Fix Windows Defender Error 0x80070005How to Stop Windows Defender Conflicts on MacWindows Security Scan Stuck at 99%: Practical FixesHow to Enable Chrome to Launch Automatically on MacHow to Get Microsoft Store Downloads Working AgainPowerShell Disappeared After Windows Update FixTroubleshoot Chrome Profile Update ProblemWindows 11 Defender Crash Troubleshooting