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Dll missing after moving to test system to self-service environment

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Posted on by mblevins

Greetings All,

We have a custom c++ DLL that we have integrated into D365 SCM. The Dll was working until we switched from a "Microsoft Managed" environment to the "Self Service" environment.

The DLL is in the deployment package and is located in the Model\Bin folder & I have redeployed since the environment was set up.

Has this location moved for self service environments? I have tested in our dev environments and all is working.

I have submitted a ticket to MS, but thought I would reach out here as well in case there was a quick fix.

Error:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.DllNotFoundException: Unable to load DLL 'rmycustomfunction.dll': The specified module could not be found.

Regards, Mark

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WillWU 22,363 on at

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Hi Mark,

The C++ dll you're refering, it's compiled in 32bit or 64?

Have you downloaded the correct version of C++ Redistributable Packages?

support.microsoft.com/.../the-latest-supported-visual-c-downloads-2647da03-1eea-4433-9aff-95f26a218cc0

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mblevins 81 on at

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It is compiled for 64bit. I have not added any other Dlls. I assume based on what I have seen from others it's due to the self service environments being hosted on server 2016 core.

Do I need to add the redistributable dlls as well to the project and deploy to the tier 2 environment?

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ergun sahin 8,826 Moderator on at

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Can you check axReference folder

File location:-

K:\AosService\PackagesLocalDirectory\<Model Name>\<Model Name>\AxReference

d365byjp.blogspot.com/.../adding-c-project-reference-to-d365.html

axcalated.blogspot.com/.../d365fo-adding-custom-dll-to-project.html

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mblevins 81 on at

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Thank you for the links, We do have the wrapper class referenced. It works in dev and was working prior to the switch to the "self service" environment.

I believe the issue is the .net has to import a C++ dll.

This requires use to the the DLLImport function in the .net code to call the C++ dll.

Ex:

internal class MyCustomDLL{
[DllImport("MyCPlusPlus.dll", EntryPoint = "MyFunction")]
internal static extern unsafe int MyFunction(string parm1) }

It fails when trying to invoke the function.

RetValue = MyCustomDLL.MyFunction("hello world");

Microsoft is currently reviewing our environment and hopefully will find a solution soon.

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