The Windows 7 SP1 RTM has been finalized and released by Microsoft. With each new major version revision of Windows 7, the MUI (Multilingual User Interface) language packs has to be updated too. The Windows 7 MUI language packs (not to be confused with LIP language packs which are available free for all) are available to Windows 7 Ultimate and Enterprise editions only.

Language packs are normally available for download via Windows Update. Microsoft does release standalone update packages in .cab cabinet files format in the form of DVD ISO image, typically to volume licensing customers, MSDN or TechNet subscribers and OEM partners, which can be used for offline installation or slipstream into Windows 7 ISO image. Adding one or more language packs to a Windows 7 image enables one or more languages in the installed Windows Client operating system, allowing corporations to deploy the same Windows 7 image worldwide while still providing localized user interfaces.

As Windows 7 SP1 is not officially launched yet, the language packs for Windows 7 SP1 is not yet available in Windows Update. But the Windows 7 SP1 MUI language packs have also been leaked, and available for free download via BitTorrent (BT) network and various file hosting services.

Windows 7 SP1 32-bit (x86) MUI Language Packs

File Name: 7601.17514.101119-1850_x86fre_client-1_langpacks_1-GRMCLP1_DVD.iso
Build: 7601.17514.101119-1850
Size: 2,256,947,200 byte
SHA-1: E9261433FF5CCACA818328A9BDBBED3F21A6405E
MD5: DE23FE0711984BD0B9FA18E6BAED66CD
CRC: 463148B9


File Name: 7601.17514.101119-1850_x86fre_client_langpacks_2-GRMCLP2_DVD.iso
Build: 7601.17514.101119-1850
Size: 244,301,824 byte
SHA-1: 4E61F795884EAC5D7F16A95D0B2E823C2579C347
MD5: C973CB21DE5A148799BB0F12910FC4AB
CRC: C74C5248
Note: Contains only Traditional Chinese (zh-tw)


Windows 7 SP1 64-bit (x64) MUI Language Packs

File Name: 7601.17514.101119-1850_x64fre_client_langpacks_1-GRMCXLP1_DVD.iso
Build: 7601.17514.101119-1850
Size: 2,745,993,216 byte
SHA-1: 7CD1FE568D968D89792DC9FF20E9AF2B318995C2
MD5: FC8F0E297AD646835C953436D100137B
CRC: 1031E26F


File Name: 7601.17514.101119-1850_x64fre_client_langpacks_2-GRMCXLP2_DVD.iso
Build: 7601.17514.101119-1850
Size: 147,802,112 byte
SHA-1: 7243277C41186C94DA465685DB17496EB152B1AA
MD5: CAA709E8719E78A619817A46F85D1470
CRC: C00402B2
Note: Contains only Traditional Chinese (zh-tw)


The extracted language packs has the file name of To install a language pack Cabinet file, here’s the guide on how to install language pack in Windows 7, and guide to change display language on Windows 7 user interface and welcome screen.

Update: Download official Windows 7 SP1 MUI language packs