HttpRequestMessageExtensions not being found at run-time in Azure Function

Question

I\'ve got an Azure Function app that creates a precompiled DLL (so it uses normal .cs files, not the older .csx method, pre-VS2017). Previously, it was targeting .Net Framew

Answer 1

I had the same issue. I spent quite a while to fix this problem.

The cause is that the Azure Functions project is refering to .Net Standard Library with version higher than 1.4.

Bringing down your .Net Standard version to 1.4 or lower would fix the problem.

But this is defintely a bug with Azure Functions SDK. They should fix it.

https://github.com/Azure/azure-webjobs-sdk-script/issues/980

https://github.com/Azure/Azure-Functions/issues/477