Error: Prerequisite installation failed: Wmf2008R2

the Media-Format-Package and returns the following information back to the Setup Lync Server components page:
Name of prerequisite: Wmf2008R2 MM/DD/YYYY HH:MM:SS AM
Name of prerequisite: Wmf2008R2 MM/DD/YYYY HH:MM:SS AM
Type of prerequisite: exe MM/DD/YYYY HH:MM:SS AM
Method used to check prerequisite state: WmfNeeded2008R2() MM/DD/YYYY HH:MM:SS AM
Result of state check: True MM/DD/YYYY HH:MM:SS AM
Executing external command: C:\Windows\system32\dism.exe /online /norestart /add-package
/packagepath:C:\Windows\servicing\Packages\Microsoft-Windows-Media-Format-
Package~31bf3856ad364e35~amd64~~6.1.7600.16385.mum /ignorecheck MM/DD/YYYY HH:MM:SS AM
Installation result: -2146762496 MM/DD/YYYY HH:MM:SS AM
Error: Prerequisite installation failed: Wmf2008R2
Details
Type: PrereqInstallFailed
Stack Trace
at Microsoft.Rtc.Internal.Tools.Bootstrapper.BootstrapperTask.AddMsiPrereq(String prereqName)
at Microsoft.Rtc.Management.Internal.Utilities.LogWriter.InvokeAndLog[T](Action`1 action, T arg)
Type of prerequisite: exe MM/DD/YYYY HH:MM:SS AM
Method used to check prerequisite state: WmfNeeded2008R2() MM/DD/YYYY HH:MM:SS AM
Result of state check: True MM/DD/YYYY HH:MM:SS AM
Executing external command: C:\Windows\system32\dism.exe /online /norestart /add-package
/packagepath:C:\Windows\servicing\Packages\Microsoft-Windows-Media-Format-
Package~31bf3856ad364e35~amd64~~6.1.7600.16385.mum /ignorecheck MM/DD/YYYY HH:MM:SS AM
Installation result: -2146762496 MM/DD/YYYY HH:MM:SS AM
Error: Prerequisite installation failed: Wmf2008R2
Details
Type: PrereqInstallFailed
Stack Trace
at Microsoft.Rtc.Internal.Tools.Bootstrapper.BootstrapperTask.AddMsiPrereq(String prereqName)
at Microsoft.Rtc.Management.Internal.Utilities.LogWriter.InvokeAndLog[T](Action`1 action, T arg)

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CAUSE

The Lync Server 2010 Setup or Remove Component installation prerequisite check c...

The Lync Server 2010 Setup or Remove Component installation prerequisite check cannot locate the Server 2008 R2 SP1 version of Microsoft Windows Media Format.

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RESOLUTION

Use the command line listed below from a command prompt window to install Window...

Use the command line listed below from a command prompt window to install Windows Media Format Runtime for Server 2008 R2 SP1 before you begin the installation of Lync Server 2010:
%systemroot%\system32\dism.exe /online /add-package /packagepath:%windir%\servicing\Packages\Microsoft-Windows-Media-Format-Package~31bf3856ad364e35~amd64~~6.1.7601.17514.mum /ignorecheck
Note The completion of the command listed previously will request a required reboot of the Windows server-based computer to complete the installation of the Windows Media Format Runtime for Server 2008 R2 SP1 version 6.1.7601.17514 package.

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MORE INFORMATION

All Front End Servers and Standard Edition servers where conferencing will be de...

All Front End Servers and Standard Edition servers where conferencing will be deployed must have the Windows Media Format Runtime installed. The Windows Media Format Runtime is required to run the Windows Media Audio (.wma) files that the Call Park, Announcement, and Response Group applications play for announcements and music.
Note Issuing the command listed in the RESOLUTION section of this article requires the equivalent permissions of the Windows server-based computers Local Administrator account.

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Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use (http://go.microsoft.com/fwlink/?LinkId=151500) for other considerations.

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