
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...
Software troubleshooting desk

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

If Windows Defender won't start and you see an error about invalid configuration, the problem is ...

If you've seen "permission denied" errors when using pnpm or npm, you're not alone. Both package ...

You're installing or updating Windows Security (formerly Windows Defender) and get an error about...

If you see "connection timeout" errors when Task Scheduler tries to run a task t...

If you see an error that Windows Defender won't start—or the service stops immediately—it's usual...