Hyper-V Integration services play a supportive role in administration of virtual environments by providing a lot of small but useful functionalities.
For many third party components such as Veritas NetBackup to run smoothly there is a requirement that both client and server must be running the same version of integration services on them.
There are two ways to determine the versions;
Method 1-
On the Server and Guest both; you may find the file "VMMS.EXE"on the following location
C:\Windows\System32
The "Properties" tab shows exact version of file
Method 2-
You can also verify the versions from registry
On the Guest:
HKLM\SOFTWARE\Microsoft\Virtual Machine\Auto\IntegrationServicesVersion
On the Host:
HKLM\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Virtualization\GuestInstaller\Version\Microsoft-Hyper-V-Guest-Installer-Win60-Package
