OpenHab2 + Windows + HabPanel Problem

I installed the OpenHab2 on a Windows Server 2016 which is running as a Virual Machine on a HP Dualxeon Server. Just this one Virtual machiene is running on 2x8Core 1,8Ghz + 64 GB RAM

Sometime the Openhap is just stucked, so i can not aktive act with switches for example.
Mostly this happens after i used the switch with HabPanel. It simply stuck and after this is not possible to use it till i restart the openhab service.

Any ideas?