https://support.microsoft.com/en-gb/topic/hyper-v-virtual-machine-backup-leaves-the-vm-in-a-locked-state-63d263ae-4062-039b-a0b6-c354e96f07a8
Fixes a problem in which Hyper-V virtual machine backup leaves the VM hanging in a backup state. This effectively blocks the VM from operating.
virtual machine backuphyperleavesvm
https://support.apple.com/en-il/120468
On a virtual machine with macOS Sequoia or later, you can use many of your favorite iCloud features, but some features aren't available.
virtual machineapple supportuseicloudil
https://support.microsoft.com/en-us/topic/update-rollup-11-for-system-center-2012-r2-virtual-machine-manager-48c4b7a4-b4d6-202c-c5ee-0491c2ef4bb2
Describes the issues that are fixed in Update Rollup 11 for System Center 2012 R2 Virtual Machine Manager.
system centervirtual machineupdaterollup