Recently migrated to new hosts running the latest version of Esxi 6.7 and vCenter Appliance. I noticed today that when taking snapshots the option to Quiesce guest file system grayed out for all VMs. I can't find a single VM that doesn't have this option grayed out. These VMs have VMware tools installed and running. I tried rebooting a couple of the VMs to see if that made a difference and it does not.
I've tried it on the host management UI and vCenter, both Flash and HTML5.
