Jupyter Kernel Not Starting: Quick Fixes
You open a notebook, try to run a cell, and the kernel dies or never connects. This is a common J...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Clear Outlook Offline Data File Cache
If Outlook is showing stale data, failing to sync, or running slowly, the offline data file cache...
How to Fix Windows Security Not Opening
You click the Windows Security icon in the taskbar or open it from Settings, but nothing happens—...
Fix Task Scheduler Not Working After Windows Update
After a Windows update, you might find that scheduled tasks no longer run, or the Task Scheduler ...
Fix Windows Defender Connection Refused via Group Policy
If you see a "connection refused" error when trying to open Windows Defender Security Center or r...
Fix Windows Update Service Not Running on Startup
If your PC gets stuck in an automatic repair loop and the Windows Update service is not running o...
Issue queue
SitemapCommand Prompt Version Error on Windows 10: Solutions
How to Resolve Store Error 0x80073cf0 and High RAM Usage
Resolve Error 0x80072efd in Windows Store
Resolve Windows Security Configuration Error
Teams Connection Error Due to Firewall: Practical Fixes
Fix Windows Defender Update Error 0x80240016
Windows Defender 504 Gateway Timeout Fix
Fix Chrome Profile Cannot Connect to Network Error
Cloudflare Error 1016: DNS Not Resolving Fix
Fix Chrome High Memory Usage That Won't Drop After Closing Tabs
Fix PowerShell Connection Refused on Localhost
Troubleshooting SSL Certificate Problems in Task Scheduler
How to Resolve Store Error 0x80073cf0 and High RAM Usage
Resolve Error 0x80072efd in Windows Store
Resolve Windows Security Configuration Error
Teams Connection Error Due to Firewall: Practical Fixes
Fix Windows Defender Update Error 0x80240016
Windows Defender 504 Gateway Timeout Fix
Fix Chrome Profile Cannot Connect to Network Error
Cloudflare Error 1016: DNS Not Resolving Fix
Fix Chrome High Memory Usage That Won't Drop After Closing Tabs
Fix PowerShell Connection Refused on Localhost
Troubleshooting SSL Certificate Problems in Task Scheduler