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nginx upstream connection refused cloudflare cloudflare origin certificate error after ssl change windows defender real time protection configuration error chrome err_connection_reset network settings fix fix npm global install permission denied without sudo docker pull access denied authentication required git SSL certificate problem unable to get local issuer on Windows nginx redirect loop configuration

Latest Troubleshooting Guides

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Troubleshooting

Fix Docker Network Missing After Reboot

After a system reboot, you may find that a Docker network you created is no longer listed when yo...

Troubleshooting

Cloudflare DNS Not Propagating After SSL Certificate Change

You changed an SSL certificate in Cloudflare, but DNS changes aren't showing up. This is a co...

Troubleshooting

Fix 'nginx -t test failed no such file or directory' Error

When running nginx -t to test configuration, you may encounter the error nginx...


                    
                    
                        
                            
                            
                                Troubleshooting
                                Fixing Git Authentication Failed in VS Code
                                
If you see "git authentication failed" when pulling, pushing, or cloning in VS Code, the ...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Enable Chrome Extensions That Aren't Loading
                                
You open Chrome and see a grayed-out extension icon. Clicking 'Enable' does nothing, or t...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Git Clone Connection Timed Out Due to Firewall
                                
You run git clone and after a long pause see connection timed out. This...



        
            
                
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                    Support Note
                     Test fixes in a non-critical profile first, keep backups for configuration files, and record exact error messages before changing settings.