UAC does more than display popup boxes.
Perfectly serious - plus the likes of SIMS (for example), won't work with it enabled.
So for example, if you end up taking registers via SIMS, you need to disable it for every machine otherwise it won't work.
I think the argument(s) for UAC are somewhat flawed really. For home users yes, but not in a business/school environment.
I had it enabled domain wide as others have said it adds an extra level of protection which is good :)
Disabled domain wide.
I use SIMS with UAC it runs and updates fine. Point and print restrictions work great for adding printers and installing their drivers from the print server. All users run as standard domain users, all admin tasks prompt for admin login, which is handy.
Have always left it on domain-wide except on our MIS server, as the MIS software requires it to be off. Other than that I have never seen a single issue.
generally on pcs on servers (pre 2012) off (im an admin i shouldnt need uac to stop me doing something dumb) and the odd pc where for reasons of software its off
Enable but without prompting for users. Admins have to right click run as admin. I installing updating applications, printers is not a issue when using the system account. I wouldnt have it disabled as it turns off ie protected mode. If it causes application issues you need to grant modify rights to the users who need it. We did have disable the folder redirection for 1 application.
UAC only prompts for changes to program files ( inc x86 on 64bit) the windows folder or the machine registry. You just have to do the modify rights. Never had to change permission on the mahine registry. A lot of our software is gpo/script.
definitely enabled, I'm honestly quite shocked that anyone disables it.
Enabled domain-wide, except on a couple of machines hooked up to cad/cam hardware with idiotic software*.
*in theory I could sit down with process explorer and make it play nicely, but the cost/benefit tradeoff isn't worth it.
@mrbios I also fail to see why its disabled.