I am using win7 sp1. Is it mean I can’t runing AmbinetOcclusion?
Please make sure that both the following updates are installed:
Update Rollup for Windows 7: https://support.microsoft.com/en-us/kb/3172605
Windows 10 Universal Runtime: https://www.microsoft.com/en-us/download/details.aspx?id=48234
That should solve the issue.