Fix Nginx Config Test Fails with 'upstream host not found'
You run nginx -t and get upstream host not found. The config test fails...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Search Not Working After Update
After a Windows update, you might click the Start menu or press the Windows key and type, only to...
Fix Windows Search Not Finding External Hard Drive Files
You connect an external hard drive, open File Explorer, and see your files. But when you search f...
Fixing 'Postman Unable to Verify SSL Certificate' Errors
If you see 'unable to verify SSL certificate' in Postman, the request is failing because Postman ...
How to Find Windows Terminal Log File Location
If Windows Terminal crashes or behaves unexpectedly, the log files can help identify the cause. T...
How to Fix Windows Security Not Working on Ubuntu
You're running Ubuntu and see an error that Windows Security isn't working. This usually happens ...
Issue queue
SitemapHow to Lower Chrome RAM Usage Without Closing Tabs
OneDrive Reset Sync Settings Step-by-Step
How to Reinstall the Windows Security Module
Troubleshoot Windows Terminal Installation Permission Error
How to Fix Chrome Profile Access Denied Error
Fix Windows Security Error 0x80072efd (Proxy Issue)
How to Fix Microsoft Store Not Responding on Windows 10
Windows Defender Scan Hangs at a Certain Percentage: Fixes
MongoDB Authentication Failed: Troubleshooting Steps
Chrome Permission Denied Error Fix
Outlook File Locked by Antivirus? Here's How to Fix It
Windows Defender Permission Denied Error: Causes and Fixes
OneDrive Reset Sync Settings Step-by-Step
How to Reinstall the Windows Security Module
Troubleshoot Windows Terminal Installation Permission Error
How to Fix Chrome Profile Access Denied Error
Fix Windows Security Error 0x80072efd (Proxy Issue)
How to Fix Microsoft Store Not Responding on Windows 10
Windows Defender Scan Hangs at a Certain Percentage: Fixes
MongoDB Authentication Failed: Troubleshooting Steps
Chrome Permission Denied Error Fix
Outlook File Locked by Antivirus? Here's How to Fix It
Windows Defender Permission Denied Error: Causes and Fixes