UAC in Vista not working?

[HellFire]

Attempted to really cleanup my system by downloading & running CCleaner &
Malware pgms.   To my surprise, upon clicking on the new downloads the following
error msg appears      :"Windows cannot access the specified device, path, or
file.  You may not have the APPROPRIATE PERMISSION (my caps) to access the item."
I tried again, login  as administrator, but w/similar negative results.  Never had this problem in Windows XP SP2!

Removed the 2 pgms , logged off & on again, redownload the pgms with no improvements whatsoever !  Need help people.

[HellFire]

Tried switching UAC off by going into Control Panel>User Accounts.  Switched UAC off, restarted my PC, tried clicking on CCleaner with similar NEGATIVE results.

Thought it was an antivirus problem, switched off firewall & antivirus programs,
clicked on Malware pgm, & was rewarded by the same negative results.  In both cases I logged in as Administrator.

Reinstalled firewall & antivirus pgms, tried clicking on CCleaner but the efforts
proved to be unsuccessful.  Insofar, Google 's no help 

[Chalenge]

Completely disable UAC:

http://tweakuac.com/home/

[HellFire]

Thx Chalenge:

Tried ur url .... on 3 different settings ... nothing worked!!  A real bummer!

[Chalenge]

The top setting is the only one you should need but the message you are getting I think indicates you dont have permission/rights to save that type of content or execute that type of file since it comes from outside your network. Right click on the file and then check the properties where you should find an 'Unblock' button.

[HellFire]

TY Chalenge .. did as per u instuctions ... there's no block or unblock in my CCleaners v 225 properties.   Checked to see if my firewall was blocking it, it's not ..
CCleaner's allowed.
Still getting the same message 

[Chalenge]

Hellfire did you already install CC and this message pops up when you try to run it or does this message pop up when you try to install CC?

[HellFire]

Already installed & when I click on it to run it, the msg pops up...tried several other
downloads, setup a success, however running it generates the odious msg. 

[Chalenge]

Okay... right click on the shortcut for the program and choose properties. Next click on the security tab and check your username and check your permissions to see if anything is set for Deny.

[HellFire]

Checked everything, as I'm the owner & administrator, I've Full Control, EVERY-
THING is allowed me & nothing is Denied.

[Chalenge]

Uninstall it and start over from scratch. 

[HellFire]

Did it thrice & it didn't help, likewise, I tried things that I read from the Google site
hoping for the best , unfortunately, w/o success.

The UAC is preventing any NEW downloads, the old, b4 the trouble began, I can open & run with no probs.  Microsoft's no help.

[TheZohan]

F+R ! back all your stuff up first!

vista is a beast easier to start from scratch.

if you can go to windows 7 you'll be alot happier

[Chalenge]

If you used TweakUAC properly then UAC should be completely off but I guess its possible that you had something set wrong before you tried TweakUAC which is quite possible if you went messing around in User Accounts before.

[HellFire]

Greetings

Never messed arnd purposely with UAC prior to this problem I'm having, tried everything I could think of to REPAIR VISTA, however that's wishing for the impossible, scoured Vista Forums, chgd my profile to a new one, restarted PC, problem is ever-present, seemingly stubborn in all aspects!

Chkd my "services.msc" under 'Run>cmd' in the hopes that I might have disabled  something I shouldn't have, to right my wrongs, I set on Manual all disabled settings.   I expected the end results to be positive, alas, such isn't the case ... the  problem is still existant!

My PC runs on Vista SP1 HomePremium if any1 having a fully functional, 100%
well running system, could u send me ur 'services.msc' or Config files so that I'd be able to chg the settings to yours, please?  Thx for ur courtesies & help.