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Installing software as an administrator vs *The* administrator

Posted on 2011-09-21
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Recently attempting a software installation as a user marked as an administrator under Windows 7, we ran into the issue of not being able to execute msi files, causing the installation to abort.  Please note that all other software installations went fine - we only had issues with a single installation of a CAD program.  We tried the various fixes found when searching on this issue such as changing the registry and adjusting the local security policy, but the only thing that worked was signing in as the user that was created when Windows 7 was initially installed.  Is there a reason for this behavior and if so can it be bypassed?  Thanks,
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Question by:james_axton
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athomsfere earned 50 total points
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Were these domain admins?

I have seen a couple installers that required the default / local admin to install the software. It appears to be something in the way the installer was built, and I have not found a resolution other than using the built in admin account.
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by:Qlemo
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Besides UAC prompts not appearing, and the fixed usage of admin accounts for some tasks in the installer, I cannot see a reason. The Admin account itself does not require or issue UAC prompts, but accounts being member of administrators do.
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by:james_axton
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The user in question was a domain user, yes, but not a domain admin.  The user was set up only as a local administrator, which happens in the course of joining a machine to a domain.  Does that qualify?
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by:Qlemo
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BTW, if you really want to find out, use ProcMon (www.sysinternals.com) with an reasonable filter condition. ProcMon catches all system events, which can be file access, registry access, tcp connections, and logs them according to your settings. In your case you will get ahead best by step-by-step exclusion of event sources (processes) not being part of what you want to monitor, until you'll see Access Denied messages or the like.
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by:james_axton
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Qlemo, in your first response I'm reading that to say that something could go wrong with an account that has been placed in the Admin group, but not with the original admin that gets set up on a first boot of Windows 7, is that correct?  If so then it fits with what athomsfere was saying as well about it going back to the way a specific installer was built.  Thanks.
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by:Qlemo
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"something could go wrong" is vague, but yes, it is what I meant. I bet on the fixed build-in admin in the installer, as athomsfere guesses.
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by:Babcy
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Just Change the Compatability of the software to XP SP3  and install as administrator, It should help you

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by:johnb6767
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If the installer isn't hard coded to only see Administrator (built-in) account, then perhaps it is a rights issue. UAC doesn't affect that account if not mistaken.....
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by:james_axton
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babcy, we tried that but with no success.  It really does appear that this was an installer issue and not a Windows 7 admin issue, and that the solution is just to, unfortunately, sign in as the original admin and install the software.  Thanks to everyone for the input and I'll split the points accordingly.  
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