Download System.net.http.dll Version 4.2.0.0 Fixed 〈Edge〉

Since direct HTTP download of the raw .dll is unsupported and insecure, use one of the following official methods:

Since version 4.2.0.0 is closely tied to the .NET Framework 4.7.x series, installing the official Developer Pack is the safest way to get the file onto your system legitimately. download system.net.http.dll version 4.2.0.0

It contains classes that allow software to send HTTP requests and receive HTTP responses from a web resource identified by a URI (Uniform Resource Identifier). In simpler terms, if an application needs to talk to the internet—fetching data from an API, downloading a file, or logging into a server—it likely relies on the code inside this DLL. Since direct HTTP download of the raw

Once you have a legitimate copy of system.net.http.dll version 4.2.0.0, you need to place it correctly. Once you have a legitimate copy of system

C:\Windows\Microsoft.NET\Framework\v4.0.30319\System.Net.Http.dll C:\Windows\Microsoft.NET\Framework64\v4.0.30319\System.Net.Http.dll

This specific version (4.2.0.0) is not actually available as a standalone package on NuGet . Instead, it is a built-in library provided by the .NET SDK and Visual Studio's build extensions. Conflicts occur because the NuGet version of System.Net.Http (e.g., v4.3.4) often maps to a lower assembly version (4.1.1.3), while the framework expects 4.2.0.0. Official Ways to "Download" or Obtain 4.2.0.0

Version 4.2.0.0 of System.Net.Http.dll is included with: