Error "The language is already installed." installing Visual Studio language packs

December 18, 2013

As I explained in the following article: HOWTO: Testing add-ins in localized versions of Visual Studio http://www.mztools.com/articles/2010/MZ2010003.aspx Visual Studio 2012 and higher allows to install additional languages (“Tools”, “Options” window, “Environment”, “International Settings” section) through language packs, rather than installing localized full versions of Visual Studio (as in previous versions): Microsoft Visual Studio 2012 Language […]