On the Windows 2008 Server go to
Start -> Run -> in run windows type "tsconfig.msc" OR go into into Administrative tools terminal server Configuration
In middle pan Should see "Edit Setting Box" in the box we should see option to "Restrict each user to single session"
double click and uncheck that option this should allow you mutliple sessions.
You should see the prompts like below
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Thanks to one my collegue whos name is the same - Atul
Thanks to one my collegue whos name is the same - Atul