When Inventor is launched by a language-specific Start menu shortcut, that becomes Inventor’s current language. Launching Inventor from the generic Desktop Shortcut or by launching an Inventor file from Windows Explorer will always start Inventor in this current language. To set another language current, launch Inventor using that language’s specific Start Menu shortcut. If the desired language is not available in the Start menu, download and install the language pack from http://www.autodesk.com/inventor-languagepacks
You can also:
You can modify the Target line of the Inventor launch icon to always launch in a specific language by adding a switch (/language) and 3 letter language code. For example, to set the default language to French, configure the Target line as follows:
"C:\Program Files\Autodesk\Inventor 2016\bin\ Inventor.exe" /language=FRA
"C:\Program Files\Autodesk\Inventor LT 2016\bin\ Inventor.exe" /language=FRA
To specify a language at the command line, you must first have downloaded and installed that language pack from http://www.autodesk.com/inventor-languagepacks
The 3 letter language codes for all languages are:
English - ENU
German - DEU
French - FRA
Italian - ITA
Spanish - ESP
Japanese - JAP
Simplified Chinese - CHS
Traditional Chinese - CHT
Korean - KOR
Czech - CSY
Polish - POL
Russian - RUS
Brazilian Portuguese - PTB