Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaS...

Fix VSCode Source Control Not Detecting Changes
You're working in Visual Studio Code, you edit a file, but the Source Control view shows no c...

Fix DNS Probe Finished NXDOMAIN with VPN Issues
When you see 'DNS probe finished NXDOMAIN' in your browser while a VPN is active, it mean...

Fix Windows 11 Installation Assistant Stuck at 99%
You're running the Windows 11 Installation Assistant, it reaches 99%, and then sits there. No...

DNS Probe Finished NXDOMAIN: Meaning and Fixes
You're trying to visit a website but Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". This...

Fix Firefox Secure Connection Failed DNS Error
You try to visit a website in Firefox and see 'Secure Connection Failed' with an error li...