Fix 'Not Recognized as Internal or External Command' Error
If you type a command like python, npm, or java in Command...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN
You're browsing with Chrome and your VPN is on, but suddenly pages won't load and you see
How to Find the Windows Activation Log File
If you're having trouble activating Windows or just want to verify your licensing status, the act...
Fix Chrome Enterprise Policy Invalid Configuration Error
When managing Chrome browsers with enterprise policies, you may encounter an 'Invalid configurati...
How to Fix BitLocker High Memory Usage
If your system is running slowly and Task Manager shows BitLocker using a lot of memory, you're n...
Fix Windows Security Not Starting Automatically After Boot
You boot your PC and notice Windows Security (formerly Windows Defender) isn't running. The icon ...
Topic paths
Quick titles
Troubleshooting BitLocker Port Already AllocatedHow to Fix Remote Desktop Service Not AvailableWindows Activation Delayed After Hardware Upgrade: FixesWindows Search Blank After Update: How to FixTroubleshoot Windows Security Offline Update SyncHow to Unlock a File in Windows TerminalFix Chrome Profile 404 Not Found ErrorTroubleshoot PowerShell Invalid Configuration Policy Error