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Could not load file or assembly 'System.IdentityModel.Tokens.Jwt, Version=5.6.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' after upgrading Azure Function's nuget packages to 3.0.4 or 3.0.5

See original GitHub issue

We have had an Azure Function V3 that has a reference to another C# project in a VS 2019 solution. There are some extension methods in the other C# project using System.IdentityModel.Tokens.Jwt Version=5.6.0.0 assembly to perform token validation. The Azure Function has been working fine by using those extension methods to validate token. The following code snippet shows the nuget packages:

    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.0.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.SignalRService" Version="1.0.2" />
    <PackageReference Include="Microsoft.Azure.EventGrid" Version="3.2.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.EventGrid" Version="2.1.0" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.3" />

We upgraded the nuget packages in the azure function according to the following list and started receiving the exception reflected the title of this ticket. What’s the solution or workaround to solve this problem?

    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.0.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.SignalRService" Version="1.0.2" />
    <PackageReference Include="Microsoft.Azure.EventGrid" Version="3.2.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.EventGrid" Version="2.1.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator" Version="1.1.4" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.4" />

For now, we had to downgrade the packages again to be able to move forward.

/cc @jeffhollan @anthonychu

Issue Analytics

State:
Created 4 years ago
Reactions:8
Comments:10 (3 by maintainers)

Top GitHub Comments

5reactions

paulbatumcommented, Mar 6, 2020

Thanks for the issue report! Go ahead and stay on 3.0.3 while we investigate.

cc @brettsam @fabiocav

4reactions

tkcecekcommented, Mar 27, 2020

Got into same problem… and worked out that it works with: Microsoft.NET.Sdk.Functions <= 1.0.31 & System.IdentityModel.Tokens.Jwt <= 6.5.0 (latest) OR Microsoft.NET.Sdk.Functions <= 3.0.5 (latest) & System.IdentityModel.Tokens.Jwt <= 5.3.0 so it’s your choice which one you need in the latest. Hope this helps.