server12装.NET 3.5
参考:https://support.microsoft.com/en-us/help/2734782/net-framework-3-5-installation-error-0x800f0906-0x800f081f-0x800f0907
参考:https://support.microsoft.com/en-us/help/2734782/net-framework-3-5-installation-error-0x800f0906-0x800f081f-0x800f0907