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.NET Core supported technologies

We support the following technologies for this agent.


Supported versions


Application frameworks

  • ASP.NET Core (3.1.X, 5.0.X 6.0.X, 7.0.X, 8.0X)

  • Model-View-Controller (MVC)

  • Razor Pages

  • Grpc.AspNetCore

Limited support

ASP .NET Core 3.1.X and 5.0.X

Not supported:


  • .NET Core Runtimes: 3.1.X, 5.0.X, 6.0.X , 7.0.X. 8.0X

  • .NET Core target framework monikers:

    • netcoreapp3.1

    • net5.0

    • net6.0

    • net7.0

    • net8.0

Limited support:

.NET Core Runtimes 3.1.x and 5.0.X

Not supported:

  • Running with an ASP.NET Core application that's a higher version than the runtime (for example, an application with the .NET Core 3.1 runtime that references ASP.NET Core 5.0)

  • Running with a .NET Core application for which the referenced ASP.NET Core version and the target runtime selected during compilation time don't match

.NET Core for Windows

Windows operating systems

  • Windows Server (LTSC) (x86, x64): 2012 R2, 2016, 2019, 2022

  • Windows Server (SAC) (x64): 1809, 1903

  • Windows workstation (x86, x64): 7, 8/8.1, 10

On 64-bit systems, you can use the agent to analyze both 32-bit and 64-bit web applications.

Not supported:

  • Windows on ARM

Server container

Kestrel, IISHttpServer

Not supported:

Http.sys (formerly called WebListener)

Hosting container

Self-hosted, IIS, IIS Express

.NET Core for Linux operating systems

Linux operating systems

  • Ubuntu: 18.04 and later (x64, ARM64)

  • Debian: 10 and later (x64, ARM64)

  • openSUSE: 15 and later (x64)

  • Alpine: 3.13 and later (x64, ARM64)

  • CentOS Stream 8 and later (x64)

  • Red Hat Enterprise Linux: 7 and later (x64)

Not supported: Red Hat Enterprise Linux 6

Server container


Hosting container



  • .NET Core 2.2 is not supported after the .NET core agent version 1.5.20. If you are using .NET Core 2.2, you'll need to use .NET Core agent version 1.5.20 or lower until you can upgrade your application’s .NET Core runtime.

  • As of .NET core agent version 1.9.9, we no longer support .NET Core 2.1. If you are using .NET Core 2.1, you'll need to use .NET Core agent version 1.9.9 or lower until you can upgrade your application’s .NET Core runtime.

  • Microsoft support for .NET 5.0 ended on May 10th, 2022 and support for .NET Core 3.1 ended on December 13th, 2022. Contrast support for .NET 5.0 and .NET Core 3.1 entered limited support with .NET Core agent version 3.0.0. Under limited support, Contrast will only solve problems that can be reproduced under supported language versions. Contrast strongly recommends that you upgrade your applications to a supported version of .NET.


The .NET Core agent does not support applications that do not reference System.Runtime and ASPNET Core. The agent also does not support trimmed self-contained deployments and executables, because the compiler can potentially trim assemblies that the agent depends on.