I have a number of Hyper-V servers running Windows 2012 Core which have not been patched in some time. Can I just patch the Hyper-V hosts or do I need to patch the VM's as well.
For background, this is a legacy environment and they people that built it have left the company some time ago without any handover. Windows Update service has been disabled on all the vm's for some reason. The vm's are a mix of Windows 7 and Windows 2008R2.
Is it just enough to patch the Hyper-V hosts?