Fix Windows Defender Error 0x80073b01 (Crash on Startup)
If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Security Proxy Error After Update
After a Windows update, you might see a proxy error in Windows Security (formerly Windows Defende...
Fix Windows Security Connection Refused Error After Network Reset
After performing a network reset, you may see a 'connection refused' error when opening Windows S...
Fix Windows Defender Service Missing After Antivirus Uninstall
After uninstalling a third-party antivirus program, some users find that Windows Defender is miss...
How to Set Up Automatic Backups in Windows 11: Step-by-Step
If you're using Windows 11 and want to protect your files without remembering to run manual backu...
Checklist for Analyzing Windows Security Log Entries
When you need to investigate suspicious activity or a system issue, the Windows Security log is y...