Checklists for software errors, setup, and tool workflows.

Fix Windows Security Service Not Starting Error

You click the Windows Security icon, but it doesn't open. Or you see an error saying the service ...

Fix Git Clone Permission Denied (publickey) on Bitbucket

You try to clone a Bitbucket repository and see:

Permission denied (publickey).
fatal: Co...

Fix Nginx Config Test Fails with 'upstream host not found'

You run nginx -t and get upstream host not found. The config test fails...

Fix Outlook 502 Bad Gateway Error from Proxy Settings

When Outlook displays a 502 bad gateway error, it usually means a proxy server is interfering wit...

Fix Windows Defender 502 Bad Gateway Error: Configuration Guide

If you're seeing a '502 Bad Gateway' error when opening Windows Defender, it usually means a netw...

Fix 'Command Not Found' in Windows Terminal for PowerShell

If you're using Windows Terminal and see 'command not found' when running a PowerShell command, i...