Compatible with Windows 7-64bits. FYI, I bought this promo version in order to update to version 12 (studio edition) on the website of the publisher of the software at very preferential rates. Indeed, the update is at least 50% (37.45 instead of 74.90) and benefiting from 10% extra (with the coupon code TL6440) is 33.70. If we add the price of the version in question 11, we arrive at a price of 53.70 to Studio version 12 (32 and / or 64-bit). Regarding the software itself, you really have to be very "light" on the effects to be applied if you do not want to create clones or types of zombies. Sparingly, this is a good software for those who are not connoisseurs of retouching in photoshop element (or other) or for people planing loaded. There is a trial version on the publisher's website to realize if one wants to use it before purchase. At that price I paid, I do not regret my purchase but I have not bought the basic rate.