Checklists for software errors, setup, and tool workflows.

Fix Windows Activation Failed Due to Product Key Mismatch

You see "Windows activation failed due to product key mismatch" after entering a key or during an...

PowerShell Not Found After Installation: Fixes That Work

You installed PowerShell — maybe the latest version — but when you type powershell o...

Fix 'Threat Service Stopped' in Windows 10 Defender

If you see a yellow warning in Windows Security that says "Threat service has stopped" or "Restar...

Windows Update Option Missing After System Update: How to Restore It

After a recent system update, you might open Settings and find the Windows Update page missing or...

Fix Docker Build Error: 'failed to solve: manifest not found'

You run docker build and get an error like:

failed to solve: error fetching ...

How to Fix Windows Search Service Not Starting

If the Windows Search service won't start, you may notice missing search results, slow file searc...