Thanks very much! Because there is a custom which have two operation systems, he can not install KB3033929 in window 7 sp1 ,then he can not play the game which released by UE4 4.11.
However,we have solved this problem by this links Microsoft 安全公告：针对 Windows 7 和 Windows Server 2008 R2 提供 SHA-2 代码签名支持2015 年 3 月 10 日 - Microsoft 支持! Many thanks for your reply!