Just like how Firefox doesn't support XP and XPSP1. At some point, old OSes won't be supported, that's just how software works, it takes extra time to support o

Just like how Firefox doesn't support XP and XPSP1. At some point, old OSes won't be supported, that's just how software works, it takes extra time to support older OSes. Microsoft only supporting one or two previous OSes doesn't suddenly tie the OS version to the browser version. If Microsoft only supported ONE OS per browser, then sure, but if you can update (even if it's limited to a few versions), then the two are not directly tied.