Windows Security Not Opening? Here's How to Fix It
You click the Windows Security icon in the taskbar or try to open it from Settings, but nothing h...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labHow to Fix Access Denied Error in Windows Security
You try to open Windows Security or change a setting, and you get an "Access Denied" message. Thi...
Fix Windows Defender Rate Limit Error & Permission Denied
When Windows Defender throws a "rate limit error" or "permission denied" message, it typically ha...
Fix Network Error 0x80070035 in Command Prompt
When you try to access a shared folder or network drive using command prompt and get error 0x8007...
Fix 'Threat Service Stopped' in Windows 10 Defender
If you see a yellow warning in Windows Security that says "Threat service has stopped" or "Restar...
Fix 'Authentication Failed' Error in Net Use Command
When you run net use to map a network drive and get 'System error 1326: Logon failur...