Multinational corporations normally have operations and offices than span across many countries in the world, and hence require computer systems that matches the local languages. To allow end-users to switch and change to local language, Microsoft provides MUI (Multilingual User Interface) language packs for Windows operating system as add-ons that enable a multilingual user interface in a Windows environment.

With the release of Windows 7 and Windows Server 2008 R2 SP1, Microsoft has released the Multilingual User Interface (MUI) Language Packs (Windows Server Language Packs) for Windows Server 2008 R2 environment. Adding one or more language packs to a Windows Server 2008 R2 SP1 image enables one or more languages in the installed Windows Server operating system, allowing corporations to deploy the same Windows Server 2008 R2 image worldwide while still providing localized user interfaces.

The MUI language packs for Windows Server 2008 R2 SP1 have been leaked prior to official release. But if you want only the official downloads, Microsoft has published the download links for the Windows in Microsoft Download Center, for individual language pack and complete package of language packs in ISO image format, which are also downloadable with the direct download links below.

Windows Server 2008 R2 SP1 MUI Language Packs (All Languages) ISO Image

7601.17514.101119-1850_x64fre_server_langpacks_1-GRMSXLP1_DVD.iso

Windows Server 2008 R2 SP1 MUI Language Packs Individual lp.cab Auto Installer (exe)

If you just want one or a few MUI language packs, Microsoft also provides individual language packs (lp.cab) in .exe executable format for download. Note that the downloads are already in .exe format, which when ran will automatically install the particular language pack.

English: Windows6.1-KB2483139-x64-en-US.exe
Arabic: Windows6.1-KB2483139-x64-ar-SA.exe
Bulgarian: Windows6.1-KB2483139-x64-bg-BG.exe
Chinese (Hong Kong SAR): Windows6.1-KB2483139-x64-zh-HK.exe
Chinese (Simplified): Windows6.1-KB2483139-x64-zh-CN.exe
Croatian: Windows6.1-KB2483139-x64-hr-HR.exe
Czech: Windows6.1-KB2483139-x64-cs-CZ.exe
Danish: Windows6.1-KB2483139-x64-da-DK.exe
Dutch: Windows6.1-KB2483139-x64-nl-NL.exe
Estonian: Windows6.1-KB2483139-x64-et-EE.exe
Finnish: Windows6.1-KB2483139-x64-fi-FI.exe
French: Windows6.1-KB2483139-x64-fr-FR.exe
German: Windows6.1-KB2483139-x64-de-DE.exe
Greek: Windows6.1-KB2483139-x64-el-GR.exe
Hebrew: Windows6.1-KB2483139-x64-he-IL.exe
Hungarian: Windows6.1-KB2483139-x64-hu-HU.exe
Italian: Windows6.1-KB2483139-x64-it-IT.exe
Japanese: Windows6.1-KB2483139-x64-ja-JP.exe
Korean: Windows6.1-KB2483139-x64-ko-KR.exe
Latvian: Windows6.1-KB2483139-x64-lv-LV.exe
Lithuanian: Windows6.1-KB2483139-x64-lt-LT.exe
Norwegian: Windows6.1-KB2483139-x64-nb-NO.exe
Polish: Windows6.1-KB2483139-x64-pl-PL.exe
Portuguese (Brazil): Windows6.1-KB2483139-x64-pt-BR.exe
Portuguese (Portugal): Windows6.1-KB2483139-x64-pt-PT.exe
Romanian: Windows6.1-KB2483139-x64-ro-RO.exe
Russian: Windows6.1-KB2483139-x64-ru-RU.exe
Serbian (Latin): Windows6.1-KB2483139-x64-sr-latn-CS.exe
Slovak: Windows6.1-KB2483139-x64-sk-SK.exe
Slovenian: Windows6.1-KB2483139-x64-sl-SI.exe
Spanish: Windows6.1-KB2483139-x64-es-ES.exe
Swedish: Windows6.1-KB2483139-x64-sv-SE.exe
Thai: Windows6.1-KB2483139-x64-th-TH.exe
Turkish: Windows6.1-KB2483139-x64-tr-TR.exe
Ukrainian: Windows6.1-KB2483139-x64-uk-UA.exe

Once a language pack is installed, user can follow the guide to change display language of Windows user interface.