Hi Hervin,
For .Net environments, you can use the agent IntroscopeDotNetAgentInstallxx_***, which is an .exe that is easy to install.
Now, the version of the agent that you are going to install depends on your CA APM environment.
In general, version 10.5.2 supports Framework V2 and V4.
Remember that when you install the .Net agent, you must reboot the IIS, recommended that you do it with IISReset via cmd.
Regards
Richard