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Unified Communications Managed API 2.0 Redist (64 Bit) Hotfix required

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at http://go.microsoft.com/fwlink/?linkid=34707.]  

Topic Last Modified: 2011-04-19

The Microsoft Exchange Best Practices Analyzer Tool queries the computer to determine whether the Unified Communications Managed API 2.0, Core Runtime files are installed. To do this, the Analyzer tool queries the computer registry for the following registry subkey:

HKLM\Software\Microsoft\Real-Time Communications\{902F4F35-D5DC-4363-8671-D5EF0D26C21D}\

Based on the results of this query, use the following guidelines to determine what to install:

  • If the registry subkey for which the tool queried does not exist, you must install the following file:

    Unified Communications Managed API 2.0, Core Runtime (64-bit)

    To install this download file, follow these steps:

    1. Click Download, and then save the UcmaRuntimeWebDownloadX64.msi program file to your hard disk.

    2. Double-click the UcmaRuntimeWebDownloadX64.msi program file on your hard disk to extract the installer files to a configurable location. By default, this location is the following folder:

      C:\Microsoft UCMA 2.0 Runtime Installer Package\amd64

    3. Locate the extracted files, and then double-click the SetupUcmaRuntime.exe file.

    4. Follow the instructions on the screen to complete the installation.

  • If the registry subkey for which the tool queried exists, the Unified Communications Managed API 2.0, Core Runtime (64-bit) components are already installed on this computer. The Analyzer tool then determines the version of the installed components.

  • If the installed version of the components is 3.5.6907.170 or a later version, no more steps are required.

  • If the installed version of the components is 3.5.6907.170 or an earlier version, you must install the following hotfix:

    Unified Communications Managed API 2.0 Redist (64 Bit) Hotfix KB 2501720

 
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