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Troubleshooting

Fix Windows Update 404 Not Found Error on Windows 11

If you see a "404 Not Found" error when running Windows Update on Windows 11, it usually means th...

Troubleshooting

Windows Update High CPU Usage Troubleshooting Checklist

If your system feels sluggish and Task Manager shows high CPU usage from TiWorker.exe


                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Windows Defender Failed to Start: Registry Repair Steps
                                
When you see “Windows Defender failed to start” or “Windows Defender service terminated unexpecte...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Windows Defender Command Not Found After Update
                                
After a recent Windows update, you may see an error like 'windows defender' is not recogniz...

                            

                        
                    

                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Windows Security Real-Time Protection Not Working
                                
If you see a yellow warning in Windows Security that says "Real-time protection is off" or it tur...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                UFW Port Closed Despite Allow Rule: Fixes
                                
You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...



        
            
                
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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.