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Latest Troubleshooting Guides

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Troubleshooting

How to Fix Windows Security Auto Start Disabled

If you notice that Windows Security (formerly Windows Defender) isn't starting automatically with...

Troubleshooting

Fix Command Prompt Invalid Configuration After Update

After a Windows update, you might see errors like "The configuration is invalid" or "Invalid comm...

Troubleshooting

How to Fix Microsoft Store Access Denied Errors

When you open Microsoft Store and see an 'Access Denied' message, it usually means a permission o...

Troubleshooting

How to Fix 'Command Not Found' in Command Prompt

You type a command in Command Prompt and get 'xxx' is not recognized as an internal or exte...


                    
                    
                        
                            
                            
                                Troubleshooting
                                Enable Windows Defender Audit Log for Troubleshooting
                                
When Windows Defender isn't detecting a threat or is blocking a legitimate application, audit log...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Fix Windows Security Not Responding
                                
Windows Security (formerly Windows Defender Security Center) may stop responding, hang on launch,...



        
            
                
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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.