Software comparisons, alternatives, and tool decision notes.

Fix Windows Defender Proxy Error Not Working

You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...

Fix Windows Defender Service Not Starting (Error 404)

If you see error 404 when trying to start Windows Defender, it usually means the service executab...

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

You notice Outlook consuming 50% or more CPU, making your syste...

How to Fix Command Prompt Failed to Start on Windows 10

If you click on Command Prompt and nothing happens, or you see an error like “Windows cannot find...

Fix Windows Activation Module Not Found Error

When you see 'Windows activation module not found' while trying to activate Windows, it usually m...

Fix Outlook Backup Restore Permission Denied on Windows 10

When you try to restore an Outlook backup (typically a .pst file) on Windows 10, you might see a ...