Windows 1903 - Host Only Adapter - VM not starting

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Problem with Windows 1903 and latest VirtualBox / Extension Package VM won't start when a Host-Only Adapter was attached.

Removal and a new fresh install of VirtualBox did not solve this issue. Under Windows 1809 the VM runs fine but not under 1903 it crashes.

This error occurs also by the newly created machine. Recreating a new Host-Only-Adapter with DHCP enabled don't do the trick, too.

• Version 6.0.8 r130520 (Qt5.6.2)
• Latest Ext Pack installed

Error Message:

Für die virtuelle Maschine Cacti konnte keine neue Sitzung eröffnet werden.

Failed to open/create the internal network 'HostInterfaceNetworking-
VirtualBox Host-Only Ethernet Adapter' (VERR_INTNET_FLT_IF_NOT_FOUND).

Failed to attach the network LUN (VERR_INTNET_FLT_IF_NOT_FOUND).

Fehlercode:E_FAIL (0x80004005)
Komponente:ConsoleWrap
Interface:IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Technical details:

sc query vboxdrv

SERVICE_NAME: vboxdrv
        TYPE               : 1  KERNEL_DRIVER
        STATE              : 4  RUNNING
                                (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
        WIN32_EXIT_CODE    : 0  (0x0)
        SERVICE_EXIT_CODE  : 0  (0x0)
        CHECKPOINT         : 0x0
        WAIT_HINT          : 0x0

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If I create a second Adapter named 'VirtualBox Host-Only Ethernet Adapter # 2' this one works. but the first Adapter still fails.