Checklists for software errors, setup, and tool workflows.

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Setting PHP Composer Memory Limit via Environment Variable

When running Composer, you may encounter a fatal error like "Allowed memory size exhausted" or "O...

Fix 'ffmpeg command not found' in Python Script

You run a Python script that calls ffmpeg, and you see ffmpeg command not found. Thi...

Fix DNS Probe Finished NXDOMAIN on Android Chrome

When you see DNS_PROBE_FINISHED_NXDOMAIN in Chrome on Android, it means the brow...

Fix kubectl Connection Refused on Windows

When you run a kubectl command on Windows and see connection refused, t...

Outlook Not Sending Emails: Practical Fixes for Common Causes

You compose an email, hit Send, and it sits in the Outbox. Or you get a vague error like “Tas...

PowerShell Proxy Configuration for Internet Access
When PowerShell can't reach external resources like NuGet repositories or online modules, a misco...