Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Windows Defender Real-Time Protection Won’t Turn Off: Fixes

You go into Windows Security, toggle off real-time protection, and within a few minutes it’s back...

Fix Task Scheduler 502 Bad Gateway Not Working

If you see a 502 Bad Gateway error when Task Scheduler runs a task that hits a web service or IIS...

Fix Windows Update 504 Gateway Timeout on Windows 10

If you see a 504 Gateway Timeout error when running Windows Update on Windows 10, it usually mean...

Fix VirtualBox Kernel Driver Not Installed on Mac

When you see "VirtualBox kernel driver not installed" on a Mac, it usually means...

Fix Ubuntu APT Lock Not Released After Update

After running an update or upgrade on Ubuntu, you may see an error like E: Could not get lo...

Windows Search Not Showing Files: Fixes That Work
You type a filename into the Windows Search box, but nothing shows up—or only old results appear....