Unable to install SQL Server Management Studio (SSMS) on server
As per MSDN BOL documentation here  for the SSMS 17.9.1 installation the .NET Framework should be 4.6.1 (or greater).

Make sure you are running an up-to-date version of the Visual C++ 2013 Redistributable Package. Version 12.0.40649.5 (or greater) is required. Only the x64 version is needed. And also all the latest OS updates are installed on the computer.

For further your ref here