Symantec Installation Manager does not install license with starts date in future

According to this Symantec KB Article it is not possible to install licenses that start in the future….

To overcome this behavior you could simply create a scheduled task which copy´s the License Files (*.SLF Files) on your SMP Server to:
C:\ProgramData\Symantec Shared\Licenses.

This does not work with .txt File Licenses!

License file that are stored in this Directory will be displayed in the Symantec Installation Manager.

You could also start an existing scheduled task on your SMP Server to refresh the Licensecount. Simply start: NS.Internal Licensing Refresh Item.{e8136a00-759c-4471-addc-b1d9e58cb5bd}