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Troubleshooting

How to Fix Cloudflare 521 Error with Firewall Settings

If you see a 521 Web Server Is Down error when visiting your site through Cloudf...

Troubleshooting

How to Set npm Prefix to Avoid Permission Denied Errors

If you've seen EACCES: permission denied when running npm install -g


                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix ERR_CERT_AUTHORITY_INVALID in Chrome Incognito Mode
                                
You open Chrome incognito and hit a warning: NET::ERR_CERT_AUTHORITY_INVALID. Th...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Windows Update Service Not Running for System Restore
                                
You might see “System Restore did not complete successfully” or “Windows Update service is not ru...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fixing Python UnicodeDecodeError When Reading UTF-16 Files
                                
You open a file in Python and get UnicodeDecodeError: 'utf-8' codec can't decod...

                            

                        
                    

                    
                    
                        
                            
                            
                                Troubleshooting
                                Docker: No Space Left on Device After Pulling Image
                                
You pull a Docker image and get no space left on device. The image might be small, b...



        
            
                
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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.