Add azure subscription to scvmm can not find the certification

Dear All

Whe I follow this link to add azure subscription to scvmm. https://technet.microsoft.com/en-us/library/mt125377(v=sc.12).aspx

I have imported private certification to SCVMM current user/personal and uploade it to azure. However, from "Add azure subscription wizard", "certificate" can not find the private certification . VMM is UR10. Thanks.