Where I work the only way I can open the command line is to "Run as" using my admin account which is different to the one I used to login to windows with.
I was trying to setup an entry in RDM so I wouldn't have to constantly enter my credentials each time and when I try and run it I get the below error message 
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Hello,
RDM launches applications using the same Windows security context that RDM itself is running under. If you're signed into Windows with your standard user account and launch RDM normally, any application started from RDM will also use that account.
In your environment, since Command Prompt can only be opened by using Run as with your administrator account, you'll need to launch Remote Desktop Manager using that same administrator account. Once RDM is running under the admin account, it will use those credentials when launching the Command Prompt, eliminating the need to enter your administrator credentials each time.
Best regards,
Carl Marien