Many people ask me why there is no built-in Administrator account available in Windows Vista and 7 like previous Windows versions? Why can't we use the default Administrator account? The answer is "Yes! The default Administrator account is created in Vista and 7 but its disabled by default for security purposes."
You might want to enable it for troubleshooting or to get rid of the annoying UAC prompts while tweaking your system. So here I'll describe a few methods to enable / activate the hidden Administrator account in Windows Vista and 7:
Method A:
1. Right-click on My Computer icon on Desktop and select "Manage", it'll open "Computer Management" window. ( You can also open it by giving "compmgmt.msc" command in RUN dialog box or Startmenu Search box).

2. Go to "Local Users and Groups -> Users". In right-side pane double-click on "Administrator" account. It'll open its Properties. Deselect "Account is disabled" option and Apply it.
Method B:
1. Type "secpol.msc" in RUN dialog box or Startmenu search box, it'll open "Local Security Policy" window.
2. Goto "Local Policies -> Security Options".
3. Double-click on first option "Accounts: Administrator account status" and select "Enabled" and apply it.
Method C:
1. Click on “Start button -> All Programs -> Accessories“. Right-click on “Command Prompt” and select “Run As Administrator“. If you are prompted to enter password, enter the password and continue. You can also open Command Prompt in Administrator mode by typing “cmd” in Startmenu Search box and press “Ctrl+Shift+Enter“.
2. Now provide following command:
net user administrator /active:yes
3. Thats it. The Administrator account will be enabled. If you want to disable it again, simply replace "yes" with "no" in above command.
NOTE: Never activate the hidden Administrator account until required. Its better to use other general accounts for better security. Also the Administrator account has no password, so if you enable it then don't forget to set a strong password for it.
This article was posted by VG in following section: Troubleshooting, Windows 7, Windows Vista.
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EVilMKB
To Jonathan:
You Can not Delete Built-in Accounts,
How ever if you Mean other Admins, you should login with Administrator or Another Admin Account(that I'm thinking that you have spare) then delete it from user manager.
Devil
Is there any way to enable the account and also hide it from the login screen in windows 7 and login by pressing ctrl+alt+del twice?
lucas
i need help I using xp home but i want to use ADMINISTRATOR ACCOUNT BUT i fail to do that they requst me an user accont .if i use the default user account that is ADMINISTRATOR does't work.and also i need to do a peer to peer network
WinFan
How can this be done via the registry?
Luke
How do you disable it? I want to close the secret admin account down and make a different user the master admin...
VG
^^ Simply reverse the process.
A.gashi
hello In my PC I have 1 account power user but the problem is accounting Administrator I Disable .is it possible to Enable again from power User in WIN XP service Pack 2 ??
Plzz Help me :$?
Steven
What account are you loged on to
You must be a Administrator to run the cmd. and is it your computer. You should be able to run cmd no madder what. though. If you need help just ask.
Steven Barber
SB Computers
rahman2011
It is very good and useful
kayla
what if I cannot log-in because I fogot my password? the only option is to boot in safe mode with command prompt, isn't it? and what command should I type to enable administrator account in order for me to reset my password. since the only account I can see right now(upon booting), is my own account and there's no administrator account I can see. please reply. thanks