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...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Fix Windows Update 502 Bad Gateway Error
You're trying to run Windows Update and you get a 502 Bad Gateway error. The update check fails, ...
Fix Outlook Auto Start Not Working in Windows 7
If you rely on Outlook opening as soon as you log into Windows 7, having it fail to auto-start ca...
How to Fix Command Prompt Version Mismatch Errors
You run a command in the command prompt and get a message like "This version of ... is not compat...
BitLocker Recovery Key Not Accepted: Fix Authentication Failed Error
You enter your 48-digit BitLocker recovery key, and instead of unlocking the drive, you see
Fix Windows Security High Memory Usage
If you notice that Windows Security (formerly Windows Defender) is using a lot of memory—sometime...
Issue queue
SitemapPython Path Setup Guide for CMD Module Errors
Fix Proxy Errors in PowerShell
Resolve Outlook 0x800CCC0F Connection Error
Fix Task Scheduler Lag and Delays for Large Task Lists
Cloudflare Error 521: Fix Web Server Connection Issues
Chrome Config File Missing on Ubuntu: Fix Guide
Reduce Memory Usage After Windows Update
Fixing Postman Request Timeout Error Code 0
How to Fix PostgreSQL Connection Refused on Localhost
Fix Missing Windows Security App Icon or Shortcut
Windows Security Port Allocation Error Fix
Fix Chrome Settings That Keep Reverting on Restart
Fix Proxy Errors in PowerShell
Resolve Outlook 0x800CCC0F Connection Error
Fix Task Scheduler Lag and Delays for Large Task Lists
Cloudflare Error 521: Fix Web Server Connection Issues
Chrome Config File Missing on Ubuntu: Fix Guide
Reduce Memory Usage After Windows Update
Fixing Postman Request Timeout Error Code 0
How to Fix PostgreSQL Connection Refused on Localhost
Fix Missing Windows Security App Icon or Shortcut
Windows Security Port Allocation Error Fix
Fix Chrome Settings That Keep Reverting on Restart