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how to fix windows 11 update stuck at 0 percent windows 11 wifi no internet access after update fix windows defender real time protection not starting git commit index.lock file exists nginx upstream connection refused timeout python unicode decode error json windows update service not running permission denied nginx configuration test failed syntax error

Latest Troubleshooting Guides

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Troubleshooting

Windows 11 Update Stuck at 0%: How to Fix

You start a Windows Update, and the progress bar sits at 0% for ten minutes, an hour, or longer. ...

Troubleshooting

Chrome Profile Sync Not Working After Update: Fixes

After a Chrome update, you might see sync paused or error messages. Your bookmarks, passwords, or...

Troubleshooting

Fix npm install Permission Denied After Node Update

After updating Node.js, you might see a permission denied error when running npm install


                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix VSCode Terminal Not Opening with Python
                                
You try to run a Python script in VSCode, click the terminal tab, and nothing happens—or the term...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Chrome Certificate Error: Not Secure Site Workaround
                                
You're trying to reach a site and Chrome shows a full-page warning: “Your connection is not p...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Clear Chrome Certificate Cache to Fix NET::ERR_CERT_AUTHORITY_INVALID
                                
When you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome, it usually means the browser...



        
            
                
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                    Recently Updated
                    
                        
                        
                            
                            Chrome Memory Saver Mode Not Working: Quick Fixes2026-07-03 · Windows Fixes
                        
                        
                        
                            
                            Fix pnpm ERR_PNPM_OUTDATED_LOCKFILE Lockfile Error2026-07-25 · macOS Help
                        
                        
                        
                            
                            Fix Windows 11 WiFi Connected but No Internet After Sleep2026-06-30 · Browser Issues
                        
                        
                        
                            
                            Fix Node.js Heap Out of Memory on Linux Server2026-07-24 · Office Tools
                        
                        
                        
                            
                            Fix Windows Defender Real-Time Protection Stuck Off in Windows 112026-07-22 · Developer Tools
                        
                        
                        
                            
                            Clear Chrome Certificate Cache to Fix NET::ERR_CERT_AUTHORITY_INVALID2026-07-09 · Cloud Software
                        
                        
                        
                            
                            VS Code Source Control Not Detecting Changes: Disable Git Fix2026-07-06 · Security Tools
                        
                        
                        
                            
                            Nginx Upstream Connection Refused: Fixing localhost Errors2026-07-25 · Backup Recovery
                        
                        
                    
                
                
                    Support Note
                     Test fixes in a non-critical profile first, keep backups for configuration files, and record exact error messages before changing settings.