Hi, as 'misak' said before, avast antivirus performs recognition of devices uniquely when they are registered to cloud console. So when you are registering a new device to cloud console, antivirus computes an unique thumbprint of hardware and compares it with all existing devices already registered into your company in cloud console. This is done because of searching for reinstallations and clones is performed. But this functionality has technical problem when some devices in company are running with purpose on some virtualization host such as virtualbox, vmware, hyper-v and so on. In this case an administrator must distinguish each of virtual guest computer on host server. This is not as easy as might be thought. In fact you have two possibilities how to ensure unique thumbprint on each guest computer:
- with help of change of physical hdd serial number
- with help of change of bios uuid
To change of physical hdd serial number you can use some tool delivered with virtualization software (at least with virtualbox and vmware).
The following link is a description how to change bios uuid on your virtual guest computer so each device will be identified to console with different unique hardware id.
http://www.altaro.com/hyper-v/free-powershell-script-change-bios-guid-hyper-v-virtual-machine/You can find several similar instruction articles on internet how to do it.
Let me know if it was helpful to you.