Multiple instance of AOS AX 2012

Hi

I installed two AX 2012 AOS instance in my local.When i try to change my server configuration from first AOS insance to second AOS instance ,i could not able to change the server configuration and start the AOS service.

Its throwing a error Windows could not start the Microsoft Dynamics AX Object Server on local computer.

Error 1067:The process terminated unexpectedly.

Regards,

Manikandan.

How can i have my both the AOS instances running

Do you see anything more in Event Log? How did you installed and configured the second AOS? Does it use the same service account as the first one?