Checklists for software errors, setup, and tool workflows.

Fix Windows Security Offline Installer Fails

When installing Windows Security (formerly Windows Defender) offline, the installer may fail sile...

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

You run docker build and get an error like:

failed to solve: error fetching ...

Fix Windows Update Stuck Checking with Permission Error

If Windows Update hangs on "Checking for updates" and you see a "Permission denied" error in the ...

Fix Windows Search Path Not Found Error 0x80070002

You open Windows Search, type a file name, and instead of results you get an error: "Path not fou...

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...

FFmpeg Audio Out of Sync: Practical Troubleshooting Guide

You encoded a video with FFmpeg, but the audio drifts or starts early/late. This guide covers the...