Fix Windows Defender Service Not Running
If you see "Windows Defender service not running" or a red warning in Security Center, the underl...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labMicrosoft Store Troubleshoot Tool: How to Fix Common Issues
If you're having trouble downloading, updating, or launching apps from the Microsoft Store, the b...
Fix Windows Security Failed to Start Due to Corrupted System Files
You open Windows Security and see the message: "Windows Security failed to start. Corrupted syste...
How to Fix Windows Defender Proxy Error
If you see a proxy error in Windows Defender—often something like "Your IT administrator has limi...
How to Fix Windows Update Service Not Running
When Windows Update fails to check for or install updates, a common cause is that the Windows Upd...
How to Repair Windows Search Using the Built-in Troubleshooter
Windows Search not returning results or indexing slowly? The built-in Search and Indexing trouble...