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One of our functional requirements at work require running a piece of software over a Japanese environment --- which means we'll have to set up a Japanese flavor of Windows for the job.

Question is, can we just patch our Windows Vista/7 with Japanese MUI language packs for this? Are there any significant functionality differences between the English and Japanese versions of Vista/7 that forces us to perform a clean install of a Japanese Windows OS instead of just patching an English one?

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up vote 3 down vote accepted

It is as simple as downloading additional MUIs, the easiest way is to install them as optional updates from Windows Update.

However, a limitation is that additional language packs are only available on Enterprise and Ultimate editions.

As for downsides, the only one I can think of is that you may have to learn Japanese!

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Haha, understanding Japanese is no problem at all, but yeah, we definitely should put that in writing somewhere :D So basically, the English and Japanese versions of Vista/7 function the same? No hidden kinks here, no GOTCHA quirks there? – Richard Neil Ilagan Oct 7 '10 at 11:43
The MUI packs simply change text and language features, the actual OS fundamentals are the same. I have never used Japanese, but can't imagine any problems what so ever. – William Hilsum Oct 7 '10 at 11:54
As far I am aware this is 100% correct - it's all in the MUI. – Shinrai Oct 7 '10 at 14:12

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