how to prevent users from installing applications

Dear Experts,
Can any one kindly tell me how prevent users from installing any applications in there computers. By the way every users is an admin in his own computer.

Windows SBS 2003 / Domain Controller.

Regargds,
Mob
mob_dreamAsked:
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svelarsenCommented:
Admins can do anything on their conputer, so i dont think its possible to prevent installing apps.
Only way is to be a non-admin user and then set permissions.
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JohnBusiness Consultant (Owner)Commented:
If you don't want the users to install software, then there really isn't much need from them to be administrators. They can either be standard users (no permissions) or power users (XP concept) with restrictions set in Group Policy. The latter is sometimes necessary for QuickBooks to run and some AntiVirus software to update. .... T
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pr0t0c0l12Commented:
By rolling our a group policy is a good idea.  I suggest you download READYSTATE from microsoft, and create a GPO and roll it out to your users.  
Readystate is a program that allows you to lock down the system. Even if users do changes to the system, all you have to do is just restart and it goes back to the previous state.  

This is an alternative to centurion technologies, deepfreeze etc...
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pr0t0c0l12Commented:
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Brian PiercePhotographerCommented:
You can use a software restriction policy to help http://support.microsoft.com/kb/324036
and
http://www.windowsnetworking.com/articles_tutorials/Software-Restriction-Policies.html
but do they really need to be Local Administrators ? Its asking fro trouble to have them all as local admins.
Its going to be better if you can remove them from the local admins group, even if you could make them power users, that would be better - better still to have them as standard users with no admin rights
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mob_dreamAuthor Commented:
you know guys why I made them local admins because I don't want to waste my time and get calls every day. Restricted users always kill your mind by asking so many things like (I can't print, I can't share copy what ever).

I am sure you are all right but I think I will make them power users on there computers. I will also check GP
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JohnBusiness Consultant (Owner)Commented:
Standard users and Power Users with some restricted install rights can map drives, add network printers, share files and generally work productively.

No, they cannot install software. They also cannot change network settings (which is a bit of a pain). On balance (speaking from experience) restricted machines run better. If you don't have time, then I do understand where you are coming from. .... T
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mob_dreamAuthor Commented:
Thank you thinkpads_user for your comment. What do you mean by you understand where I'm coming from!!!!
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Brian PiercePhotographerCommented:
Making all users local admins so that you "don't want to waste my time and get calls every day" is not the correct approach - you should always work on the basic of least privilaged use - it may be "easier" to mal all users local admins initially but it leads to exactly the sort of issues you are now experiencing. As local admins they have complete control of their machine, including the ability to remove it from the domain and restricting these rights is frought with problems as, because the are admins, they can undo restrictions that you might impose.
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JohnBusiness Consultant (Owner)Commented:
mob_dream - What I meant was that, in the short term, it may be easier to let users do as they wish. In the longer term, what I and other posters here are counselling is that machines will run more reliably over a longer period of time if users are not administrators.
... T
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mob_dreamAuthor Commented:
Thank you all for your efforts. I changed them to local power users everything went ok except some users when they tried to open there files like access or some folders they get message access denied any way I logged in as administrator and gave them full permmiossions on the files security.

Regards,
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