CMU 2.1 stopped working after the upgrade to Windows 10. Program starts, but does not display the images nor audio.
According to the official website, the CMU application supports only the following operating systems:
You can check this information on the following page: https://pro.sony.com/bbsc/ssr/micro-nxcamsite/resource.downloads.bbsccms-assets-micro-nxcam-downloads-NXCAMContentManagementUtility.shtml
This is the main reason your software is having issues in Windows 10. Additionally, right click the main executable and select Properties > Compatibility. Choose Windows 7 from the list and launch the application.