Dynamics AX 2012 - Error during deployment SSRS Reports on the Second instance of SQL Reporting

On a server running multiple report server instance i have a error during SSRS Reports deployment.

I have run the command Test-AXReportServerConfiguration that return IsReportServerRunning : False

After a hard investigation ...without success, i have uninstall the second instance of Reporting Services and install again.

After that i have follow again the steps listed on TechNet page Install multiple instances of Reporting Services on the same computer (for use with Microsoft Dynamics AX) [AX 2012] (technet.microsoft.com/.../hh389760.aspx) and now all work fine.

Enjoy!