AppCrash on Server 2012 effects all users of .exe

Question

We have a legacy application that has functioned on a Windows 2003 Terminal Server for nearly 7 years successfully.  We're migrating to 2012 Host, onto a 2012 Hyper-V Guest.
The Terminal Server (RDP) VM is running, and serving 50+ full desktops successfully with Microsoft Office and other relatively new applications.
We have two older (regrettably FoxPro) applications that are experiencing a weird issue.
When one user encounters an application error (AppCrash) it will effect the ability for all other users to continue running that .exe; and in fact they will receive the same error (Typically c000203, InPageError).  They each have a 'copy' of the .exe,
that they are launching from a directory in their own %userprofile%\AppData\Local\; but I think that some of the .app and other FoxPro dependent files are executed by the .exe from the Shared Location "C:\Server\FoxProProgram".
UAC is Off, and DEP is set to exclude these .exe files.  I have not tried turning DEP on for "Only Windows Files/Services"; but that might be my next step.
My question is, is there something in DEP, or another service (of Hyper-V Integration, or elsewhere in Server 2012) that does some sort of Single Instance storage (de-duplication) of binary/files in RAM (Memory) that could be related to this; and is there
a way to enable Process Isolation, so that each user has an isolated usage in RAM so errors from one user, do not effect others?

Answer 1

Hi,
Based on my knowledge, RDS has nothing to do with this. It may depend on the design of the App. It is highly recommended to use the versions of Apps which are compatible with Windows Server
2012.
Apart from this, you may try the following:
1. Use Microsoft ACT to mitigate the compatibility issues.
Assess and Mitigate Compatibility Issues with ACT
http://technet.microsoft.com/en-us/windows/gg981914.aspx
Application Compatibility Best Practices for Remote Desktop Services
http://www.microsoft.com/en-us/download/details.aspx?id=18704
2. Deploy the applications using App-V
App-V and Remote Desktop Services
http://download.microsoft.com/download/2/5/E/25EEFF4E-A81A-464F-9AB1-98FA1EF755AA/App-V%20Remote%20Desktop%20Services.docx
Getting Started With App-V 5.0
http://technet.microsoft.com/library/jj713418.aspx
RemoteApp and App-v, when to use
http://social.technet.microsoft.com/Forums/windowsserver/en-US/4a915955-91ec-41c7-8e00-df03381fd56c/remoteapp-and-appv-when-to-use?forum=winservergen
Note: Usage rights for App-V for RDS are included with the RDS Client Access License (RDS CAL). However, the App-V Windows Desktop client, which is installed on physical and virtual Windows
desktops, is licensed through the Microsoft Desktop Optimization Pack (MDOP). MDOP is available as a subscription for Software Assurance customers.
Hope this helps.
Jeremy Wu
TechNet Community Support