© 2017 Adobe Systems, Inc. All rights reserved.

Updated Mar 01, 2018.

Language Support and Configuration

With respect to language support, Adobe provides the following installers:

For older product versions, identify installers as follows:

Verifying language support

In addition to the installer’s filename, you can also check the setup file directory which includes the language specific .mst files. These are identified by language ID codes.

Pre-deployment configuration

Methods for specifying the product language include:

  • Install a single language installer.
  • Install a multi language installer (MUI or non-English which also includes English), and let the end user select the language.
  • Set the language with the Customization Wizard. Refer to Installation Options > Language selection.
  • Set the language with command line properties.
  • Specify whether a MUI application should use the OS language by setting bUseMUI to 1 as described in the Preference Reference.
  • Specify both the language code and the language-specific MST on the command line. For example, to deploy a Dutch version of the product, use:
msiexec /i <path\AcroPro.msi> LANG_LIST=en_US TRANSFORMS="1043.mst;<other MSTs if needed>"  /qb

Multilanguage installers

All Acrobat 11.0 and later installers are MUI installers. Reader is also provided in a MUI version. MUI installers provide a way to install the product with support for more than one language. Features include:

  • Support for more than one language so that users can switch languages.

  • Automatic selection of the language based on the language of the current OS.

  • 11.0 introduces a MUI installer for Acrobat on both Windows and Macintosh which provide the following benefits to enterprise IT and OEM vendors:

    • A reduction in the number of Acrobat installers from twenty to two (1 each for Pro and Standard).
    • For those supporting multiple locales, one or two downloads (as opposed to up to 20) and a simpler patching and update workflow.
    • Smaller patch sizes. In 10.0 and earlier, Acrobat patches needed to provide separate files for 20 installers. 11.0 and later MUI installers use fewer files.
    • Simplified licensing: Both Windows and Macintosh use a limited number of serial number types to specify the product language.

The base installer is an MSI file, and MSP patches are also periodically released which can only be applied over the base mui MSI install. Both installers are identified by “_mui” in the filename.


MUI installers are only created in tandem with full MSI installers. They are not created for MSP updates and patches. For example, 10.0 and 10.1 include MUI installers while 10.0.1, 10.0.2, and 10.0.3 do not. What this means for your deployment methodology is that you simply install the generic installer over your MUI install if there is a no MUI-specific installer. If there is a MUI-specific installer, you must use that. Download the MUI installer from ftp.adobe.com/pub/adobe/reader/.

The MUI Reader always contains the base English resources. To support another language, an additional resource bundle is added to the installation. Therefore, English is always present, and the single language Reader is about the same size as the MUI Reader.

The installation size varies with the type of install:

  • Bootstrapper (setup.exe) or UI-based installer: The size is significantly larger than the single language version because the full installer is kept on the disk.
  • AIP install: Except for minor differences in some of the text files, the size of the MUI Reader will be about the same as the single language Reader.

Windows MUI installers

Windows MUI installers for Acrobat behave as follows:

  • All serial numbers are language based.

  • There are two types of serial numbers: one for all languages and one for a single language.

  • The installer gets the language attributes from the serial number.

  • English is always installed in addition to any specified locale.

  • End user installs with a retail non-MUL serial number do not provide additional language options at install time.

  • Language specification occurs as follows:

    • An “all language” serial number installs Acrobat in the OS language (Typical Installation).
    • A “single language” serial number installs Acrobat in the specified language
    • End users can choose any combination of languages to be installed via a custom installation.
    • End users will be able to install one or more languages via the Installer Repair/Modify option.
    • The LANG_LIST property can be used for command line installs.

Macintosh MUI installers

Since there is no Acrobat Standard for Macintosh, there is a single MUI installer which behaves as follows:

  • All serial numbers are language independent.
  • All languages are installed by default.
  • The OS language will determine the language in which Acrobat will be launched.

The serial number is read by the application at launch time, and the OS locale controls which language the application should load. Trials are available in all supported languages, although only a single trial language can be installed at any point of time.

Machine-level details

The application language is selected during the installation of the initial major version using Setup.exe and is then stored on the system. For example, on Windows, it’s in:

[HKEY_CURRENT_USER\Software\Adobe\<product name>\<version>\Language]"UI"="ENU"

The product UI language is actually determined by the sidecar dll stored in:

[HKEY_CURRENT_USER\Software\Adobe\<product name>\<version>\Language]"current"

Therefore, if a user switches the dll under current or changes the UI key, the two keys may not match. Ultimately, the dll under current determines the product language.

11.x language support

Tier 1
Language Name Locale SKU abbreviation Comments
Universal English en_US UE All products
French fr_FR F All products
German de_DE D All products
Japanese ja_JP JPL All products
French Canadian fr_CA FC Mapped to fr_FR
International English en_GB EAP, EUE, EUW, IE, LAE Mapped to en_US
Tier 2
Language Name Locale SKU abbreviation Comments
Dutch nl_NL NL All products
Italian it_IT I All products
Spanish es_ES E All products
Latin/North American Spanish es_MX LAS, NAS mapped to es_ES
Brazilian Portuguese pt_BR PB All products
Portuguese pt_PT P mapped to pt_BR
Swedish sv_SE S All products
Danish da_DK DK All products
Finnish fi_FI SF All products
Norwegian nb_NO N All products
Tier 3
Language Name Locale SKU abbreviation Comments
Chinese Simplified zh_CN CS All products
Chinese Traditional zh_TW CT All products
Korean kr_KR KOR All products
Tier 4
Language Name Locale SKU abbreviation Comments
Czech cs_CZ CZ All products
Hungarian ht_HU HU All products
Polish pl_PL PL All products
Russian ru_RU RU All products
Ukrainian uk_UA UKR All products
Turkish tr_TR TR All products
Slovak sk_SK SL Windows only
Slovenian sl_SI SVN Windows only
Basque eu_ES none Windows Reader only
Catalan ca_ES none Windows Reader only
Croatian hr_HR none Windows Reader only
Romanian ro_RO none Mac and Windows, Reader only
Tier 5
Language Name Locale SKU abbreviation Comments
North African French fr_MA NAF All products (no locale for Mac since the UI appears in the OS locale)
Middle Eastern English for Arabic en_AE MEA All products (no locale for Mac since the UI appears in the OS locale)
Middle Eastern English for Hebrew en_IL MEH All products (no locale for Mac since the UI appears in the OS locale)

10.x language support

Language support for 10.x
Tier Windows Macintosh
Tier 1 English, French, German, Japanese English, French, German, Japanese
Tier 2 Italian, Spanish, Dutch, Brazilian Portuguese, Swedish, Danish, Finnish, Norwegian Italian, Spanish, Dutch, Brazilian Portuguese, Swedish, Danish, Finnish, Norwegian
Tier 3 Chinese Traditional, Chinese Simplified, Korean Chinese Traditional, Chinese Simplified, Korean
Tier 4 Russian, Ukrainian, Romanian, Turkish, Czech, Hungarian, Polish, Slovak, Croatian, Slovenian, (Reader only: Catalan, Basque) Russian, Ukrainian, Romanian, Turkish, Czech, Hungarian, Polish
Tier 5 Greek, Arabic, and Hebrew Greek, Arabic, and Hebrew

Locale and language codes

Installer filenames include a locale identifier consisting of consists of a language code and a country code. For example, the Reader installer filename is in the form of AdbeRdr<version>_<language code>.exe. Thus, AdbeRdr10_en_US.exe is an English installer.


Details about what languages are supported in each release appear in the Release Notes.

Installer components and workflows adhere to the ID system used by Microsoft. For details, see:

These IDs are also used on the command line, in installer tables, and elsewhere.

Locale and language codes
Language Code Language ID code
Basque eu 1069
Bulgarian bg 1026
Catalan ca 1027
Chinese (China) zh_CN 2052
Chinese (Taiwan) zh_TW 1028
Croatian hr 1050
Czech cs 1029
Danish da_DK 1030
Dutch nl_NL 1043
English en_US 1033
Estonian et 1061
Finnish fi_FI 1035
French fr_FR 1036
German de_DE 1031
Hungarian hu 1038
Italian it_IT 1040
Japanese ja_JP 1041
Korean ko_KR 1042
Latvian lv 1062
Lithuanian lt 1063
Norwegian nb_NO 1044
Portuguese – Brazilian pt_BR 1046
Romanian ro 1048
Russian ru 1049
Slovak sk 1051
Slovenian sl 1060
Spanish es_ES 1034
Swedish sv_SE 1053
Turkish tr 1055
Ukrainian uk 1058
English with Arabic en_AE 1025
English with Hebrew en_IL 1037
North African French fr_MA 6165
Polish pl_PL 1045

Windows XP configuration


Products that support Windows XP have been discontinued.

On Windows XP machines, the OS’s regional settings may need to be changed to enable non-Latin language selection during a MUI install. Regional switching is not an Acrobat feature but how Windows XP works with codepages.

To change the OS settings:

  1. Control Panel > Regional and Language Options.

  2. Selected Advanced tab.

  3. In Language for non-Unicode programs, select the Language.

  4. For Japanese, Chinese, and Korean:

    1. Choose the Languages tab.
    2. Choose Install files for East Asian Languages.
    3. Reboot if you don’t immediately see these languages available under Language for non-Unicode programs.


XP uses codepages to enable certain character support. Codepages are the way Windows enabled non-Latin language character encodings before Unicode was supported. For an overview, see http://en.wikipedia.org/wiki/Windows_code_page.

Selecting a codepage activates all the languages associated with that code page. For example, changing the regional settings and selecting a codepage for Czech also makes Polish, Hungarian, etc. available, but not Turkish.

Language mapping to codepages
Codepage Language
932 Japanese
949 Korean
936 Chinese Simplified
950 Chinese Traditional
1250 Czech, Polish, Hungarian, Croatian, Slovenian, Romanian, Slovak
1252 English, French, German, Italian, Spanish, Swedish, Dutch, Danish, Finnish, Norwegian, Brazilian Portuguese, Catalan(2), Basque(2)
1254 Turkish
1251 Russian, Bulgarian(1), Ukrainian
1257 Estonian(1), Latvian(1), Lithuanian(1)
  1. Acrobat 9 languages not in Acrobat 10 and later; (2) Reader only