install itunes 12.5.1 fail win 10 64 bit

I want to updae my ipad pro tot the IOS 10.0.1 but then i have to install itunes 12.5.1.

When i install it on my win 10 64 bit Pc then i get the message that the installation is cancelled due to a program that can be installed and then when i click contunue the installation is stopped.

How can i resolve this problem?

Grtz Lbielen