Hyper-V Integration Services should be updated after applying SP1 on Virtual Machines
Now that you installed SP1 on Hyper-V/Windows 2008 R2 servers, you should upgrade the Integration Services in all virtual machines or have the SP1 installed on the VM’s also.
To do this using the Virtual Machine Manager, connect to the VM :
1. Click in ACTION,
2. Click Insert Integration Services Setup Disk
3. Click Install Hyper-V Integration Services
4. Click OK, when a message informing about a previous installation show.
To check the Integration Services version, look at the Driver version of the Microsoft Virtual Machine Bus Network Adapter in Device Manager