Fix 'Not Recognized as Internal or External Command' Error
You type a command in Command Prompt and see "'command' is not recognized as an internal or exter...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Defender Port Already Allocated in Event Viewer
If you see 'port already allocated' errors in Event Viewer related to Windows Defender, it usuall...
Fixing Certbot Nginx Plugin Dependency Issues with Pip Install
When installing the Certbot nginx plugin using pip, you may encounter dependency errors such as <...
Fix 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...
Fix PowerShell Azure Token Expiring After 1 Hour
If you're running PowerShell scripts against Azure and find that your authentication token expire...
How to Fix Windows Update Download Failure from Ubuntu
If you're running Ubuntu alongside Windows and Windows Update keeps failing to download updates, ...
Topic paths
Quick titles
Resolve 504 Gateway Timeout on Windows UpdateFix Microsoft Store Sign-In After Settings ResetResolve Chrome Permission Denied on ProfileChecklist for Chrome Module Not Found ErrorMicrosoft Store for Ubuntu 22.04 SetupHow to Fix APT Lock Permission Denied in UbuntuHow to Fix Black Screen in Teams by Turning Off Hardware AccelerationFix Windows Update Token Expired Registry Error