After updating to System Center Configuration Manager Technical Preview 1604, the site server component SMS_BUSINESS_APP_PROCESS_MANAGER on the site server is not reinstalled by Site Component Manager. This prevents onboarded applications from the Windows Store for Business from appearing in the Administrator console.
To work around this, please run the following PowerShell script as an administrator on your site server:
This script will reinstall the SMS_BUSINESS_APP_PROCESS_MANAGER component and restore the Windows Store for Business functionality.
J.C. Hornbeck, Solution Asset PM
Microsoft Enterprise Cloud Group