Software troubleshooting desk

Practical fixes for tool errors, setup blocks, and workflow issues.

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Nginx 502 Bad Gateway in Docker Containers

An Nginx 502 Bad Gateway error when proxying to a Docker container usually means Nginx cannot rea...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix DNS Probe Finished NXDOMAIN Not Working on WiFi

If you see "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome while connected to WiFi, your browser ...

Fix npm install ENOENT Error: No Such File or Directory

When you run npm install and see an error like ENOENT: no such file or directo...

How to Fix Edge Sync Stuck on Preparing Sync
You open Microsoft Edge, click your profile, and see 'Preparing sync' — but it never fini...

Fix Windows Defender Real-Time Protection Configuration Error
You open Windows Security and see a message that real-time protection is turned off or has a conf...


    Issue queue
Sitemap
How to Fix Firefox SSL Error Due to Wrong System Clock
Resolve 'Permission denied' for Python pip User Install
PyCharm Virtual Environment Not Activating? Try These Fixes
How to Troubleshoot Docker Network Not Found
Windows 10 Remote Desktop Setup Guide
How to Fix Cloudflare Origin SSL After Renewal
Chrome Black Screen on External Monitor Fix
Windows Security App Configuration Error Fix
How to Fix Access Denied When Mapping Network Drive in Windows 10
How to Resolve Windows 11 Update Freeze at 0%
How to Resolve Git Stash index.lock Error
Handling Large Files in Python on Mac Without Memory Errors
Desk note

    Troubleshooting paths
Home
Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities