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Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Windows Security App Not Working After Update: Fixes

After a Windows update, the Windows Security app may fail to open, show a blank window, or displa...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

When you run git clone or git pull and see an error like "S...

How to Stop Windows Explorer from Restarting
If Windows Explorer (explorer.exe) keeps restarting—your taskbar disappears and reappears, or you...

Fix Git SSL Certificate Problem Unable to Get Local Issuer on Ubuntu
When you see git SSL certificate problem: unable to get local issuer certificate on ...

How to Fix Git Clone Timeout on Slow Internet
If you're seeing fatal: unable to access 'https://...' : Failed to connect ...:...

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