Para ativar sessões simultâneas, você pode usar este patch ou copiar os arquivos do Servidor 2k8 ( o patch faz a mesma coisa, 32 e 64 bits DLLs estão no arquivo zip). Em seguida, siga estas instruções:
Once downloaded, extract the files into a directory (for the purposes of this guide, it will be assumed that the files have been extracted to the folder C:\Win7RDP )
Open Windows Explorer to the above folder
Right Click on “install.cmd” and select “Run as Administrator”
Wait for the script to run entirely. At the end, you should see something similar to below: