Jupyter Kernel Not Starting in VS Code: Quick Fixes
You open a Jupyter notebook in VS Code, try to run a cell, and the kernel either hangs on "Starti...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listCheck Which Process Is Using a Port on Windows
When a service or application fails to start because a port is already in use, you need to identi...
How to Fix Windows Defender Cannot Connect Issue
If you see “Windows Defender cannot connect” or similar errors, it usually means the service is b...
Fix PowerShell Restore Failed Access Denied Error
When running a restore operation in PowerShell—whether for files, system state, or database backu...
How to Fix Windows Update High CPU Usage and Clean Up
If your PC feels sluggish and Task Manager shows 'Windows Update' or 'TiWorker.exe' pegging the C...
Fix Windows Update Stuck at 0% Downloading
You click 'Check for updates' and see 'Downloading 0%' for an extended period. This is a common i...
Topic paths
Quick titles
How to Safely Clear Windows Update CacheTask Scheduler Startup Failure: Permissions TroubleshootingFix BitLocker Ubuntu Read-Only Mount IssueTroubleshooting MySQL Can't Connect IssuesHow to Fix Windows Defender Permission Denied After UpdateFix Windows Security App Errors and Blank PagesFix Task Scheduler 404 Not Found Due to PermissionsHow to Fix Blank Defender Screen in Safe Mode