Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices 2.2.1

Prefix Reserved
.NET Framework 4.7.2 This package targets .NET Framework 4.7.2. The package is compatible with this framework or higher. 
dotnet add package Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices --version 2.2.1
                    


                    

                
NuGet\Install-Package Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices -Version 2.2.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices" Version="2.2.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices" Version="2.2.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices --version 2.2.1
                    


                    

                
#r "nuget: Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices, 2.2.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices@2.2.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices&version=2.2.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices&version=2.2.1
                    


                            Install as a Cake Tool

Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices

Provides services for ASP.NET Framework applications to integrate with System Web Adapters, enabling session/authentication sharing with ASP.NET Core apps during incremental migration.

Getting Started

The package automatically adds an HTTP module to your web.config.

In Global.asax.cs:

using Microsoft.AspNetCore.SystemWebAdapters.Hosting;

public class MvcApplication : HttpApplication
{
    protected void Application_Start()
    {
        HttpApplicationHost.RegisterHost(builder =>
        {
            builder.AddSystemWebAdapters();
        });
        
        // ... other startup code
    }
}

Remote Session Server

Share session state with an ASP.NET Core application:

HttpApplicationHost.RegisterHost(builder =>
{
    builder.AddSystemWebAdapters()
        .AddRemoteAppServer(options => options.ApiKey = "your-api-key")
        .AddSessionServer();
});

Shared Data Protection

Share encryption keys with ASP.NET Core:

using Microsoft.AspNetCore.DataProtection;

HttpApplicationHost.RegisterHost(builder =>
{
    builder.AddDataProtection()
        .PersistKeysToFileSystem(new DirectoryInfo(@"C:\shared-keys"))
        .SetApplicationName("MySharedApp");
    
    builder.AddSystemWebAdapters();
});

Additional Documentation

Product Compatible and additional computed target framework versions.
.NET Framework net472 is compatible.  net48 was computed.  net481 was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices:

Package Downloads
Aspire.Microsoft.AspNetCore.SystemWebAdapters

Package Description

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.2.1 527 12/18/2025
2.2.0 1,048 12/10/2025
2.2.0-preview1.25568.2 386 11/19/2025
2.2.0-preview1.25554.5 153 11/5/2025
2.1.0 7,470 10/21/2025
2.0.0 76,357 2/5/2025
1.4.0 188,398 5/8/2024
1.3.2 138,909 1/26/2024
1.3.1 9,029 1/11/2024
1.3.0 30,181 11/15/2023
1.2.0 33,693 6/29/2023
1.2.0-preview.1.23219.1 297 4/26/2023
1.1.0 130,778 3/16/2023
1.0.0 42,474 11/22/2022
1.0.0-rc.1.22477.1 6,015 9/28/2022