Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
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All notesFix Cloudflare DNS Propagation Not Happening for www
You updated DNS records for your www subdomain in Cloudflare, but hours (or days) later, the chan...
Fix Windows 11 Installation Assistant Stuck at 99%
You're running the Windows 11 Installation Assistant, it reaches 99%, and then nothing happen...
Fix Chrome Black Screen After Disabling Hardware Acceleration
If Chrome shows a black screen after you turn off hardware acceleration, you're not alone. Th...
Fix Windows 11 Bluetooth Error 0x00000001
If you see error code 0x00000001 when trying to turn on Bluetooth or pair a device in Windows 11,...
How to Fix Cloudflare 521 Error Due to Proxy Issues
If you see a Cloudflare 521 error, the message usually says something like “Web server is down.” ...
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