Hi, you need to install them along with the dictionary for each so the spell check. https://addons.mozilla.org/en-GB/firefox/language-tools/ Then when someone wants to use it they would have to do this to change to the language of choice :

• https://support.mozilla.org/en-US/kb/use-firefox-interface-other-languages-language-pack

Please let us know if this solved your issue or if need further assistance.

You likely have to rename the extensions to the ID as found in install.rdf if you haven't done this.

• em:id="[email protected]"
• [email protected]

Good morning all,

@Pkshadow: thank you for the recommendation but I only want to achieve that the users are able to set the interface language of Firefox using the about:config value 'intl.locale.requested'. So no dictionaries necessary I guess. The 2nd URL you gave me describes the manual installation of language packs. I am in need of a procedure to have them automatically installed with my customized installation package.

@cor-el: thank you too! I could not find any install.rdf file, so I used the ids within the manifest.json file within each xpi file and renamed it accordingly, e.g. de.xpi to [email protected] but no success so far: The installation does not give any error, and the xpi files are installed into C:\Program Files\Mozilla Firefox\extensions but the language packs are not visible in Firefox about:addons (no 'languages' option is there).

short typo correction:

'e.g. de.xpi to [email protected] ' must read 'e.g. de.xpi to [email protected] '

The extensions need to be in the distribution/extensions directory.

• https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Customizing_Firefox

simply place the extensions in the distribution/extensions directory in the application's distribution directory.

@cor-el: that's it! Thank you very much, that way it worked! Best regards, Stephan