Supported technologies for .NET Framework (legacy)


The legacy .NET Framework agent offers the full capabilities of Contrast Assess, Protect, and OSS as of April 2020 but is no longer receiving new features or lower severity bug fixes. Contrast will continue to fix critical bugs in the legacy agent until January 10th, 2023.

The legacy Contrast .NET Framework agent can be used to analyze ASP.NET web applications using the following technologies:


Supported versions

Contrast version

Contrast version 3.7.3 or newer

Agent versions

20.4.4 and future versions of 20.4.X


3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8

Operating systems

  • Windows 7, 8, 10

  • Windows Server 2008 R2, 2012, 2012 R2, 2016, 2019

Application framework

  • ASP.NET MVC 3-5

  • ASP.NET Web Forms

  • ASP.NET Web Pages

  • IIS-Hosted ASMX-based Web Services

  • IIS-Hosted Web API

  • IIS-Hosted WCF Services

Processor architecture

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

Web servers

  • IIS

  • IIS Express