Fix Windows Defender 404 Not Found Error on Windows 10
You click to open Windows Defender Security Center and see a 404 page, or the Settings app shows ...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labHow to Fix Windows Search Authentication Failed by Setting Correct Credentials
If you see an "authentication failed" error in Windows Search, it usually means the service can't...
Fix Chrome Version Mismatch Between Devices
You notice bookmarks, passwords, or open tabs aren't syncing correctly between your desktop and p...
Fix PowerShell Reset Settings Permission Denied Error
When you try to reset PowerShell settings using Set-ExecutionPolicy or Reset-I...
Fix Windows Defender Connection Refused via Group Policy
If you see a "connection refused" error when trying to open Windows Defender Security Center or r...
Fix Windows Security Proxy Error Not Working
Windows Security may stop working with a proxy error, often due to misconfigured proxy settings o...