How do I install language packs on Windows Server 2008 R2?
Make sure that you download the 2008 R2 SP1 Multilingual package, and not the 2008 R2 Multilingual package: http://www.microsoft.com/download/en/details.aspx?id=12250
Make sure that you download the 2008 R2 SP1 Multilingual package, and not the 2008 R2 Multilingual package: http://www.microsoft.com/download/en/details.aspx?id=12250