SSRS – No connection could be made

1.  Check in C:\Program Files\Microsoft SQL Server\MSRS12.MSSQLSERVER\Reporting   Services\ReportServer\bin\Microsoft.Dynamics.AX.ReportConfiguration.axc.
2.  Edit the file and change the port.
3. If the file is not there, open AX client configuration, configure your instance with same port and export this configuration file in the above path with same name  Microsoft.Dynamics.AX.ReportConfiguration.axc
4. In case any permission issue or Company parameter expected error, go to  C:\Program Files\Microsoft SQL Server\MSRS12.MSSQLSERVER\Reporting   Services\ReportServer\rssrvpolicy.config , edit the file in code group , change the permission set name to Fullcontrol.

Thanks