Server2012R2 Domain Computer not recognizing Admin Credentials?

I am thinking that there is a security setting causing my problem.

Set up a new domain (someone else did it).  Joined a single computer to the domain.  It is a new computer running Win8.1 Pro.  Very small network. 10 users.  Logged into the computer with a domain user account. If I try to install a new program or even update a program that requires elevated admin privileges, it prompts me for the new credentials.  When I enter them it acts as if they are incorrect.  It just keeps prompting me to supply the credentials.  If I log the domain user account off and log back in with the domain admin account (the same one that wouldn't work before) it accepts them and completes the install.

I also have a QNAP TVS-663 NAS in the network.  I believe that I have it setup properly for Active Directory authentication.  The shares are showing up on the network from the domain computer but the same thing is happening - It prompts for credentials and if I use the domain user or the domain admin or the local admin for the NAS crediential it will not connect.  It just keeps prompting for new credentials.

I am sure it is a setting that I have wrong, but cannot find it.

Thanks.
kishvetAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
If I try to install a new program or even update a program that requires elevated admin privileges, it prompts me for the new credentials.

Most programs require Full Admin privs to install software because they may be touching parts of the Registry that are restricted to Domain users (even with elevated privs).

Another thing is when you install the applicaiton and it prompts for username and password make sure that the username also has the correct domain as well. Sometimes it will prompt and use the local computer name i.e. computer1\admin which is not correct.

Does this happen with any other machine? Also in regards to your NAS it probably does not have Active Directory Authentication enabled.

Will.
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Devendra ThatteCommented:
Hi,
If you want users to install a software without prompting elevation, add them in the local admins group on the workstations.
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