Enable the administrator account on Windows 8

You need to run the command from an elevated command prompt. To do that you need to do the following:

• Press the Windows key to get into the Metro interface if you are not already there.
• Enter cmd and right-click on the Command Prompt result that should appear.
• This opens a list of options at the bottom. Select Run as administrator there.
• Accept the UAC prompt

Enter the following command to enable the hidden administrator account: net user administrator /active:yes

If you ever want to disable the account follow the same instructions, but run the following command instead: net user administrator /active:no

Once you have enabled the account, you will see it listed in the user accounts control panel applet. Note that the account has not assigned a password to it, and that you should consider setting one to improve account security.