PrereqInstallFailed (Wmf2008R2) in Windows Lync Server 2010 Installation.
This error occurs while the installer runs the following 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
And the ERROR is:
Resolution: Run the following command in the command prompt in the windows server prior running the Lync installation. Requires a System Reboot.
http://support.microsoft.com/kb/2522454
%systemroot%\system32\dism.exe /online /add-package /packagepath:%windir%\servicing\Packages\Microsoft-Windows-Media-Format-Package~31bf3856ad364e35~amd64~~6.1.7601.17514.mum /ignorecheck