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Troubleshooting

Fix 'Could not get lock /var/lib/dpkg/lock' Error on Ubuntu/Debian

You try to install a package with apt or dpkg, and you get the error: Could not get lock /v...


                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Fix Windows Update Permission Denied Error
                                
You click 'Check for updates' and get hit with 'Permission Denied' or 'Access Denied' – a common ...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Fix Outlook Taking Too Long to Open Emails
                                
If you click an email in Outlook and it takes several seconds or more to open, you're not alone. ...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fixing Nginx Permission Denied Error (Code 13)
                                
If your Nginx server returns a 403 Forbidden error with message Permission denied (e...
                            
                        
                    
                    
                    
                        
                            
                            
                                Troubleshooting
                                Fix Certbot Renewal Failed with ACME Error
                                
If you see a message like Certbot renewal failed with acme error when running ...

                            

                        
                    

                    
                    
                        
                            
                            
                                Troubleshooting
                                How to Fix PuTTY SSH Connection Refused Error
                                
You open PuTTY, enter your server's IP and port, click Open, and get "Connection refused"...



        
            
                
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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.