Method #1
- Using MSCONFIG
-
Launch MSCONFIG by from
the Run menu.
-
Click on the Tools tab.
Scroll down till you find "Disable UAC"
. Click on that line.

-
Press the Launch button.
-
A CMD window will open.
When the command is done, you can close
the window.
-
Close
MSCONFIG. You need to reboot the
computer for changes to apply.
Note that you can re-enable
UAC by selecting the "Enable UAC" line and
then clicking on the Launch button.
Method #2
- Using Regedit
-
Open
Registry Editor.
-
In
Registry Editor, navigate to the
following registry key:
-
Locate
the following value (DWORD):
EnableLUA
and give it a value of 0.

Note: As always,
before making changes to your registry
you should always make sure you have a
valid backup. In cases where you're
supposed to delete or modify keys or
values from the registry it is possible
to first export that key or value(s) to
a .REG file before performing the
changes.
-
Close
Registry Editor. You need to reboot the
computer for changes to apply.
In order to re-enable UAC
just change the above value to 1.
Method #3
- Using Group Policy
This can be done via Local
Group Policy or via Active Directory-based
GPO, which is much more suited for large
networks where one would like to disable UAC
for many computers at once.
If using Local Group Policy
you'll need to open the Group Policy Editor
(Start > Run > gpedit.msc) from your Vista
computer.
If using in AD-based GPO,
open Group Policy Management Console (Start
> Run > gpmc.msc) from a Vista computer that
is a member of the domain. In the GPMC
window, browse to the required GPO that is
linked to the OU or domain where the Vista
computers are located, then edit it.
In the Group Policy Editor
window, browse to Computer Configuration >
Windows Settings > Security Settings > Local
Policies > Security Options.

In the right pane scroll to
find the User Access Control policies
(they're down at the bottom of the window).
You need to configure the following
policies:

You'll need to reboot your
computers.
Method #4
- Using Control Panel
-
Open Control Panel.
-
Under User Account and
Family settings click on the "Add or
remove user account".

-
Click on one of the user
accounts, for example you can use the
Guest account.
-
Under the user account
click on the "Go to the main User
Account page" link.

-
Under "Make changes to
your user account" click on the "Change
security settings" link.

-
In the "Turn on User
Account Control (UAC) to make your
computer more secure" click to unselect
the "Use User Account Control (UAC) to
help protect your computer". Click on
the Ok button.

-
You will be prompted to
reboot your computer. Do so when ready.

In order to re-enable UAC
just select the above checkbox and reboot.