By searching for info on this topic, I ended up here, maybe a bit late to the party but it might be valuable to add my two cents. Changing the language of an Adobe application varies from application to application. Fortunately, in most applications for Mac OSX the resources for multiple languages are embedded in one and the same application. So you don't install complete new applications, but just some extra resources. However, actually using that language differs for almost each application. Some applications like Photoshop, Muse, and Acrobat simply offer a interface language setting in the Preferences. Yes, the shortcut key for Preferences is different in almost all applications, and I'm not getting into that debate... Then: some applications change immediately, some change partially but need a Quit and Restart, some rely on the System Preference's language order setting and act accordingly after logging out and in again, some applications just need to Quit and Restart after changing the System's Preference setting. So it's a mixed bag of procedures. And the Creative Cloud panel has nothing to do with these procedures - its language setting is just for its own interface and installing language resources. I also tried to install applications twice by changing the installation location in CC, hoping for 'twin' applications that I could just open up the right application for the desired language at will (English or Dutch), but that didn't work well. Nothing new was installed, just some extra resources in the application's regular file or folder. So Adobe is really trying to let us at least use multiple languages, but the way how to use them is not consistent. A final word: some CC users in Europe have been offered and purchasing a rare "English only" upgrade to CC, which lacks multi-language capabilities (falling back to the trial period for any installed non-English language). Beware ! http://forums.adobe.com/message/5642418
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