Troubleshoot 504 Gateway Timeout in Windows Security App
When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labWindows Security Access Denied Troubleshooting Checklist
You try to open a file or run a program, and Windows tells you access is denied. This usually com...
Fix Windows Store Stuck on Pending Download
You open the Microsoft Store, tap Download, and it just sits there on “Pending.” The progress bar...
Fix Windows Defender Connection Refused After Update
After a recent Windows Update, you might see a "connection refused" error when trying to open Win...
Fix Windows Defender Module Not Found After Antivirus Uninstall
After uninstalling a third-party antivirus program, Windows Defender may fail to load its modules...
Fix Chrome Profile Service Unavailable on Windows 10
When you see 'Profile Service Unavailable' in Chrome on Windows 10, Chrome can't load your profil...