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Latest Troubleshooting Guides

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Troubleshooting

How to Fix Command Prompt Not Opening in Windows 11

You click Command Prompt but nothing happens. The window doesn't appear, or it flashes and closes...

Troubleshooting

Fix Git SSL Certificate Verification Failed Error

If you see fatal: unable to access 'https://...': SSL certificate problem: certificate veri...


                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Fix Windows Defender DNS Error
                                
You open Windows Security and see a message like "DNS server is not responding" or "Your IT admin...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Set Up Windows Security Proxy Settings
                                
If you've noticed that Windows Security isn't updating or connecting to the cloud for threat defi...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Windows Security Rate Limit Error Configuration
                                
You may see a rate limit error in Windows Security when trying to update definitions, run a scan,...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Remote Desktop Proxy Authentication Failed Errors
                                
When you see "Remote Desktop proxy authentication failed," the connection to the remote machine i...



        
            
                
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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.