Mous is missing in VM

Hi,

I have parent server Windows 2012 R2. There are 4 Virtual Machines (VM) with Windows 2012 R2 server installed.
I am accessing VMs via remote desktop.

Now three machines are OK. The last one I can connect only via Hyper-V manager.
But mouse pointer is only dot. I checked devices, there is no mouse device.
In the event. Log is message:

The driver \driver\mouclass failed to load.

I tried to install Integrated services bat there is latest version 6.3.9600.16389.

Can anybody help me?

JN