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This guide describes a common method to regain access to a Windows Server OS when the password for an administrator account is forgotten or lost. You don’t need to reinstall the operating system, and no data is lost.

Access the VPS Management Portal

Mount password reset helper image and boot

  • Enable VNC Server
  • Click Mount ISO
  • In the drop-down list select image: 1_Password-Reset-Helper.iso
  • Check the box force reset & boot from the selected ISO then click the Mount ISO button
  • Finish mount by clicking β€œMount ISO” Reset Windows Password
  • Open the noVNC or connect by VNC client

Launch noVNC

  1. Click β€œLaunch noVNC” to see console output
  2. Click into the noVNC browser window to set focus
  3. The ISO will load automatically. When it is loaded, you can see this notification: Reset Windows Password
  4. Press Enter
  5. Select -> 1 and press Enter: Reset Windows Password
  6. Select -> q and press Enter: Reset Windows Password
  7. Select -> y and press Enter: Reset Windows Password
  8. Accept the changes made by pressing Enter: Reset Windows Password

Unmount the ISO

Once the password is reset, make sure to unmount the ISO (Password Reset Helper) image. You can do this in the VPS Management Portal.

Reboot and test

After rebooting, Windows will automatically log in to the Administrator account without requesting a password. You must set a new password by opening the CMD (Command Prompt) with administrative rights: Reset Windows Password In the terminal window that opens, run the command:
Where: - Administrator is the Administrator account in Windows that has full system control - newpassword is a new password. Reset Windows Password

Disable VNC access

Now close the noVNC tab and disable VNC access in the VPS Management Portal.

πŸŽ‰ Congratulations!

You’ve successfully updated your Windows Administrator password. Now, try logging into the server with your new credentials. This is crucial to ensure that the password change took effect and that you have regained access to your server. Happy computing! :)
Last modified on September 5, 2026