How to Fix PuTTY Connection Refused Error
You open PuTTY, enter your server IP or hostname, click Open, and get "Connection refused...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Loading Issue with Built-In Repair Tools
If Windows Security (formerly Windows Defender) won't open or gets stuck on a loading screen, the...
Troubleshoot 502 Bad Gateway in Windows Terminal: Checklist
You're using Windows Terminal and suddenly see a 502 Bad Gateway error when tryi...
Fix Windows Terminal Version Mismatch Error Code
You open Windows Terminal and see an error: “Version mismatch” or “Error code: 0x800...
Fix Windows Terminal JSON Error After Update
After a Windows Terminal update, you might see an error like "Error parsing JSON" or a blank sett...
How to Fix Command Prompt High CPU and Memory Usage
You open Task Manager and see Command Prompt (cmd.exe) consuming a large percentage of CPU or a l...
Topic paths
Quick titles
Windows Security Blank Screen Error TroubleshootingHow to Resolve Maven Dependency FailuresRemote Desktop Dependency Conflict Troubleshooting ChecklistFix Windows Security Not OpeningHow to Unstick Command Prompt When It Won't OpenResolve Windows Activation Blocked by Corrupted System FilesJupyter Kernel Dying Troubleshooting GuideOutlook Configuration Error Troubleshooting Guide