Unable to install Ax2012 R2 cumulative update 1 on AOS server


We do have client,AOS and DB on different m/c and Trying to install CU1 for Ax2012 R2 on these. But unalbe to install CU1 on AOS server, getting error like " Install path for 32 bit files can’t be under folder reserved for 64 bit file"

Any help please.

Thank you,