LunaSupport — Windows Tech Quick Reference

Common field diagnostics and repair commands
Technician note: Run administrative commands only when authorized. Review network-impacting commands before using them on production systems.

Windows Image / System Repair

Run DISM first, then System File Checker.

DISM.exe /Online /Cleanup-Image /RestoreHealth sfc /scannow

Group Policy / DNS

gpupdate /force ipconfig /flushdns ipconfig /registerdns

Network Information

ipconfig /all route print arp -a netstat -ano

Network Stack Reset

Use when TCP/IP or Winsock corruption is suspected. A restart may be required.

netsh winsock reset netsh int ip reset

Wi-Fi Diagnostics

netsh wlan show interfaces netsh wlan show drivers netsh wlan show profiles

Power / Battery

powercfg /batteryreport powercfg /energy powercfg /requests

Windows Package Manager

winget search <appname> winget list winget upgrade --all

Useful Launch Commands

appwiz.cpl ncpa.cpl services.msc devmgmt.msc eventvwr.msc msinfo32