Lync debugging tool installation error

Hi,

Getting an error while installing  lync debugging tools on Lync Front End Server with Operating system windows server 2012 R2. 

The error message being " installtion requires Microsoft Visual C++ 2012 x64 runtime 11.0.50727". However , while running the Lync server set up this version of visual c++ would have been installed already. Please help me to move forward.

Regards,

Archana