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I have to update an old vb.net app built on .net 3.5, so I recreated its environment which includes several 3rd party dlls. Everything works fine on my Win11 Home laptop. However, my Win11 Pro desktop cannot run this app in the VS2019 IDE. It produces the error 'can't load assembly because it is built with a newer runtime than currently loaded'. By looking at the Modules list I can see which DLL is causing the problem. The reference is correctly set for this InteropDLL which is built on .net V2.0.50727. When I Run the IDE, VS2019 builds a modified version of this Interop using .net 4.0.30319. When attempting to load this module, it hits the error.
I can manually replace the InteropDLL in the debug folder with a copy of the originally referenced InteropDLL and can run the EXE. However, if I Start the IDE, it immediately replaces that DLL and I hit the error.
Any suggestion as to what I might try in this situation? The Win11 Home laptop works correctly with an identical copy of the project folder.
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What is the target framework version for the project upgrade?
Could you please provide more information about the InteropDLL and your project?
The target framework is the same as the project was originally created in, .net 3.5, target CPU is x86.
The project is written in vb.net. It uses a dll named Veradyne.ProcompControl.dll which was built targeting .net 3.5 and x86. It was last built in vs2010 for production release. Veradyne.ProcompControl.dll references TTLLiveCtrlLib.dll. The Interop for TTLLiveCtrlLib.dll is referenced in the project as shown in Dependencies below; it uses framework 2.0.50727
When I run the project in the IDE, the Interop is 'copied' to the debug folder but has been changed to use .net V4.0.30319. This causes the Veradyne.ProcompControl.dll to crash when it attempts to load.
The entire project structure looks like this
Hi @Larry Ledden ,
Try setting "Use specific version" property to "true" in referenced assembly properties.
Best Regards.
Jiachen Li
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Thanks for your suggestion. I did so as shown in the screenshot below.
Also deleted the bin and obj folders. When I ran, I encountered the same problem and the Interop is once again built with V4.0.30319.
Thanks for your suggestion. I did set the Specific Version property to true, but it still has the same behavior
Hi @Larry Ledden ,
The problem you are experiencing may be a bug in Visual Studio because this is an unexpected result.
It is recommended that you post your issue to the Visual Studio Developer Community.
As an alternative solution, try setting Copy Loacl to False.
Thanks for your suggestion. I attempted to report the problem, but got a message that VS2019 Community is now under extended support and we are no longer reviewing feedback for it. So unfortunately, this does not look like an option.
Hi @Larry Ledden ,
Then maybe you can try to go to Visual Studio 2022 and see if the problem is solved.