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