Fix PowerShell 502 Bad Gateway Certificate Errors
When you run a PowerShell script that makes an HTTPS request, you might see a 502 Bad Gateway err...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Jupyter Notebook Token Not Working on Mac
You launch Jupyter Notebook on your Mac, see the token URL in the terminal, copy it into your bro...
Fix Docker Build: Repository Does Not Exist or Requires Login
You run docker build and get an error like failed to solve: repository does no...
How to Restart Remote Desktop Service from Command Line
If you need to restart the Remote Desktop service on a Windows machine—perhaps because users can'...
Windows Defender 504 Timeout: Quick Troubleshooting Checklist
You open Windows Security or try to run a scan, and instead of working, you get a 504 timeout err...
Fix Windows Update Connection Refused Due to Firewall
If Windows Update fails with a "connection refused" error, your firewall is likely blocking the u...
Topic paths
Quick titles
Fixing Chrome Profile Update Error and Sync Not WorkingFix Command Prompt Blank Screen on StartupOutlook Autodiscover Troubleshooting GuideOutlook Ubuntu Permission Denied TroubleshootingHow to Clear SSH Known Hosts and Fix Host Key Verification FailedWinRAR Checksum Error: Causes and How to FixResolve Windows Backup Restore Error 0x81000019Cloudflare Full Strict SSL Error Troubleshooting