Fix PuTTY Network Error: Connection Refused on Ubuntu
When you try to connect to an Ubuntu machine using PuTTY and see "Network error: Connection refus...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Activation DNS Error
You try to activate Windows, but get a DNS error. The system can't reach the activation server. T...
Fix 'git remote add origin repository not found' Error
When you run git remote add origin <url> and get repository not found
How to Fix Windows Update Blank Screen in Safe Mode
You boot into Safe Mode after a failed Windows Update, but the screen stays blank. This usually m...
Fix Chrome Profile Service Unavailable Error
When Chrome shows 'Profile service unavailable', it usually means the browser can't access your p...
Fix Windows Backup Error 0x80070001 After Update
After a Windows update, you might see backup error 0x80070001. This often means "Incorrect functi...
Topic paths
Quick titles
Fix Windows Security Login Loop Error: Step-by-StepHow to Resolve Office 365 Token Expired in CMDHow to Resolve Windows Defender Token Expired Error with MalwarebytesResolve Remote Desktop Token ExpiryTroubleshooting Windows Activation Service Not AvailableHow to Resolve Gateway Timeout in RDPChrome Update Error 0x80070002 Windows 7 TroubleshootingHow to Fix Windows Search Connection Refused Error