I was configuring Dynamics AX 2012 R3 reporting extension on one of Virtual machine. Here is my notes with step by step screen shot.
First step to run step up and then add or modify component option.
Click on next button and select reporting extension form
Click on next and from next window click on
Validate it, if any component is missing then download and install it.
When validate and click on next.
From next screen enter Business connector, as on my R&D virtual machine
From next screen select the required reporting server.
If you want to deploy report just after the installation, check the deploy reports.
Click next to run the installation process,
Let it completed.
After let it complete, Open Dynamics Ax client by right click on its icon and run as administer.
Now go at Administrator module and click
And ad server name and click on validate button
Now report server configured successfully and all reports will successfully run.