Hello Udo,
that wasn't any option, because I needed the entropie on a windows vm, so there isn't any haveged.
On ecodms server you need some entropie to get a valid license.
It stoped working every few days and I had to contact the support every week to reset my license.
Now i changed to the linux version of ecodms server and I've installed haveged.
With this setup it works fine. ;-)
Best Regards
PizzaTime