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 listHow to Fix Microsoft Store Not Opening on Boot
If the Microsoft Store fails to launch when Windows starts, you may see no window at all or an ap...
Fix BitLocker Dependency Conflict After Windows Update
After a Windows update, some users see a BitLocker error like "A required dependency is missing" ...
Fix Windows Activation Error 0xc004c003 After Hardware Change
If you see error 0xc004c003 after upgrading your PC's motherboard, CPU, or other major hardware, ...
Microsoft Store Memory Leak: How to Fix High RAM Usage
If you notice your PC slowing down and Task Manager shows the Microsoft Store using hundreds of m...
Outlook SSL Certificate Error: Step-by-Step Fixes
You open Outlook and see a persistent warning about an SSL certificate error. The message often s...
Topic paths
Quick titles
Fix Windows Security Cannot Connect to the AppStop Windows Search Throttling: Disable Rate LimitingHow to Open Password Protected 7-Zip ArchivesWindows Security Login Loop Configuration GuideBitLocker Drive Performance Optimization GuideFix Windows Activation Blank Screen in Command Prompt RepairChrome Profile Setup Steps for New UserHow to Configure OneDrive Sync with Commands