On the Microsoft Mahjong page in Microsoft Store, select Get the game (online) or Install (in Microsoft Store app). The game will download and install automatically. To launch the game, select Play.

As such, during the late Qing reforms, mahjong became considered a social issue. Mahjong started to become outlawed indirectly as gambling and smoking opium became criminalized. The ban was not very successful, however, at least until the Chinese cultural revolution.