You could just search for the file, then put it in matlab's working directory. I encountered a similar situation (matlab R2016b, visual studio 2015 C++, cuda 8.0, trying to get mexcuda to work):
Error using mex
LINK : fatal error LNK1104: cannot open file 'ucrt.lib'
After some searching, I found out that there were 2 versions of this file (most probably a result of Visual Studio C++ 2015 messing things up), so I copied one version to the working directory and it worked! Not the most elegant solution around, but it gets the job done. (Tested on the mexGPUExample.cu and there was no problem)