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DllExportAppDomainIsolatedTask task failed, requested value Version48 not found

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I have a .NET Framework project in Visual Studio. While trying to build it, I get the following error message:

Error The "DllExportAppDomainIsolatedTask" task failed unexpectedly. System.ArgumentException: Requested value 'Version48' was not found.

As I understand it, the 48 refers to .NET Framework version 4.8.
I have installed this version of the .NET Framework on the computer, but the error remains.

How can I fix this?

.net

posted about 22 hours ago

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22h ago

FractionalRadix‭

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Worked for FractionalRadix‭

The following users marked this post as Works for me:

User	Comment	Date
FractionalRadix‭	(no comment)	Apr 18, 2025 at 18:37

You can fix this by installing Microsoft Build Tools 2015:

https://www.microsoft.com/en-us/download/details.aspx?id=48159

I found this solution on that other Q&A site. According to the comments there, this should also work if the error message refers to Version46 or Version47.