Running into RPC 1722 issue - Business Connector session - AOS unavailable

Hello, We are running AX 2012 FP with CU2 and AOS became unavailable. The windows event log revealed the following:

The description for Event ID 180 from source Microsoft Dynamics AX cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

Microsoft Dynamics AX Business Connector Session 12.

RPC exception 1722 occurred in session 12 process is Ax32.exe thread is 3420(User: Admin, ClientType: GUI)

Source - Application Error:

Faulting application name: Ax32Serv.exe, version: 6.0.947.862, time stamp: 0x4f12cd00

Faulting module name: clr.dll, version: 4.0.30319.18010, time stamp: 0x5038768c

Exception code: 0xc0000005

Fault offset: 0x000000000005479f

Faulting process id: 0xc0c

Faulting application start time: 0x01ce00d233965492

Faulting application path: C:\Program Files\Microsoft Dynamics AX\60\Server\IronAX\Bin\Ax32Serv.exe

Faulting module path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll

Report Id: 364101a4-7483-11e2-9401-00155d021d03

Faulting package full name:

Faulting package-relative application ID:

source - .NET Run time

Application: Ax32Serv.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an internal error in the .NET Runtime at IP 000007F894CC479F (000007F894C70000) with exit code 80131506.

Hi! Were you able to solve this? Thanks.

what you did exactly??

Yes, please let us know how you resolved the issue. Thank you.

Hi. Does anyone know how to solve this?

If I ran into this, would get latest kernel and log this with Microsoft if it didn’t help. You can also try Crash and Dump Analysis on LCS (or WinDbg directly).