In October this year, Blizzard will cease support for Windows XP and Vista for their games. If you’re using one of the old operating systems, you’ll need to upgrade if you want to play World of Warcraft, StarCraft II, Diablo III, Hearthstone, and Heroes of the Storm. This change isn’t likely to have a huge impact on most Blizzard players. looking at Steam usage statistics, and assuming a level of hardware similarity between the two playerbases, shows a small percentage of users with these operating systems. Less than 1% of Steam users currently fall within the XP/Vista category, and the number is steadily decreasing.
Blizzard pointed out in the announcement that Microsoft themselves stopped supporting these same operating systems by 2012. Although a high playerbase using ese older systems meant Blizzard kept on supporting them in their games. But it looks like those players have either upgrades their OS or quit playing since that time.
“The games will not run on these older operating systems once they are no longer supported, so we encourage any players who are still using one of the older OSes to upgrade to a newer version,” Blizzard say. “We’ll be rolling out this change on a staggered schedule, and will post further notices as we get closer to making the change for each game.”