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Changed framework version results in: Could not load file or assembly PresentationFramework?

I am working on WPF application, which was first targeted to 3.0 framework. When I tried to make it work on 4.0, I got following Exception.

System.IO.FileNotFoundException was unhandled Message: Could not load file or assembly 'PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

If I compile application using .Net 4.0 it is working fine. But 3.0 exes are not working with 4.0.

Thanks in advance.

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Pranit Kothari Avatar asked Nov 04 '22 22:11

Pranit Kothari


1 Answers

Try to remove the DLL reference to the PresentationFramework in your Visual Studio project, then retarget your application framework in the Project Properties, and then add PresentationFramework reference again.

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StuffHappens Avatar answered Nov 13 '22 03:11

StuffHappens



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