Wow, that's an old post. For currently supported versions I believe they released all patches at the same time, but XP was a problem because users without exten

Wow, that's an old post. For currently supported versions I believe they released all patches at the same time, but XP was a problem because users without extended support contracts were left vulnerable which facilitated spread of WannaCry until they pushed updates to everyone. It's Microsoft's policy not to release fixes for unsupported versions to the public (this was an exception) and it leads to this kind of problems.