You have a computer that has the Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package version 9.0.30729 installed. If you try to install Microsoft Unified Communications Managed API Redistributable (UCMARedist.msi), the installation process fails. Additionally, you receive the following error message:
Microsoft Unified Communications Managed API 2.0 Core Redist installation or uninstallation requires that VC++ 2008 Redistributable is already installed.
This error message is not clear because it does not indicate that a specific version of Visual C++ 2008 Redistributable package is required.
To resolve the problem of failing to install the Microsoft Unified Communications Managed API Redistributable, download and install the Microsoft Visual C++ 2008 Redistributable Package version 9.0.21022 from the following Microsoft Web site: