If you are running your computer as a joe schmoe user, and you have a mapped drive to a server, when you go to connect to an administrative share it will give you:

Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed.

In order to get around this try the below

From here

http://www.experts-exchange.com/Networking/Windows_Networking/Q_22912036.html

There’s a little workaround that allows you as many as two parallel connections with different credentials to the same machine:
For one connection, use the host name to connect to the share, for the other connection, use the IP address.