Checklists for software errors, setup, and tool workflows.

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Fix Windows Defender Not Starting Due to Invalid Config

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

Fix Windows Update Service Not Running After Malware Removal

After removing malware, you may find that Windows Update no longer works. The service might be di...

Fix Task Scheduler 404 Not Found Error When Creating Task

When you try to create a new task in Task Scheduler and get a "404 Not Found" error, it usually m...

Fix Microsoft Store Error 0x80073cf0: App Won't Start

When you try to open the Microsoft Store and see error code 0x80073cf0, the app either fails to s...

Fix 'Windows Defender Command Not Found' in Windows 10

You open Command Prompt or PowerShell, type something like MpCmdRun or Get-MpC...

How to Reset Windows Search Configuration to Default
If Windows Search stops returning results, runs slowly, or behaves erratically, a corrupted confi...