Within the NetExtender Properties dialog box, click the Languages heading in the menu on the left panel. The available options allow you to select your language settings or import other language packs on NetExtender.
To configure language properties
Import allows you to upload a new language pack to NetExtender. Click Import. Select the language pack you want to import. Click Open.
Language packs must be in .ZIP format.
After the import, the language displays in the Language drop-down menu.