Microsoft Download Center Archive

Microsoft Application Request Routing 3.0 (x86)

  • Published:
  • Version: 3.0.5311
  • Category: servers
  • Language: English

Microsoft Application Request Routing (ARR) 3 for IIS is a proxy based routing module that forwards HTTP requests to application servers based on HTTP headers and server variables, and load balance algorithms.

Microsoft Application Request Routing (ARR) for IIS is a proxy-based routing module that forwards HTTP requests to application servers based on HTTP headers, server variables, and load balance algorithms.

ARR Version 3 is an incremental release that includes all of the features from Version 2, and adds the following features:

  • Websocket support

  • Support for application-triggered session affinity opt out

  • failcheck reliability improvements

  • Various bug fixes


    • ARR version 3 and previous released cannot be installed side-by-side.

    More details can be found on www.iis.net

    IMPORTANT - Changes in this release

    • Windows 10 Support - It is now possible to install ARR 3 on Windows 10 with this release
    • Web Farm Framework 1.1 is no longer required, Application Request Routing no longer has a dependency on Web Farm Framework 1.1
    • Changes to load balancing algorithms available. The following algorithms have been REMOVED from Application Request Routing:
      1. Weighted Total Traffic
      2. Least Current Request
      3. Least Response Time
    • Buffering on SignalR responses is now disabled.
    • Logging improvements made to help diagnose why requests failed with Status Code 502.3
    • This release also incorporates fixes in KB3016062


    Click the Download button on this page to start the download, then do one of the following:

    • To start the installation immediately, click Open or Run this program from its current location.

    • To copy the download to your computer for installation at a later time, click Save or Save this program to disk.

    Knowledge Base Articles:

    Files

    Status: Live

    This download is still available on microsoft.com. The downloads below will come directly from the Microsoft Download Center.

    System Requirements

    Operating Systems: Windows 10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2008, Windows Server 2008 R2, Windows Server 2019

  • Internet Information Services 7.0 or later must be installed
  • For WebSockets support, Internet Information Services 8.0 or later is required, and the WebSockets module must be enabled

    • Installation Instructions

    ARR is dependent on several components:

  • URL Rewrite

  • Web Farm Framework

  • External Cache module


    • Do not attempt to install this package directly due to this dependency. To install ARR and all its components in the appropriate order, use the Microsoft Web Platform Installer (http://www.microsoft.com/web/downloads/platform.aspx) and search for ARR within it. Alternatively, read the following blog post for instructions on installing ARR manually: http://blogs.technet.com/b/erezs_iis_blog/archive/2013/11/27/installing-arr-manually-without-webpi.aspx

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