I don’t know how to Crack the local admin password, but I know how to become one. 🙂

Following tools is all you need:

  • Ability to Insert CD (ISO) to the VM (Server)
  • Ability to boot VM (Server) from CD
  • Windows Installation CD (ISO), 2012R2, 2012, Win7, 2008R2, 2008, etc… all good



  • Shutdown the Server (VM)
  • Insert windows installation CD (ISO) to the Server (VM)
  • Boot up the Server (VM) from CD
  • When you see the welcome installation page, press “Shift + F10”
  • Backup “osk.exe”
    • move C:\windows\system32\osk.exe c:\windows\system32\osk.bak
  • Copy “cmd.exe” as “osk.exe”
    • copy C:\windows\system32\cmd.exe c:\windows\system32\osk.exe
  • Eject CD (ISO)
  • Reboot the server
  • At the login page, click On-Screen Keyboard, you will see command prompt popped up… 🙂
  • Add a new user: Username: tempadmin Password: password
    • net user tempadmin password /add
  • Add this user into Local Admin group
    • net localgroup “administrators” “tempadmin” /add
  • Then quit this command prompt
  • You are good to login with your new username and password as administrator. Just don’t forget to copy the osk.bak back to osk.exe and delete the tempadmin user after you fix your local admin password!