Host clock skew

I am running Workstation Pro v.15.5.0. Both the VM that I use and my host run Windows 10. Whenever I do not have an internet connection, Workstation tells me that a host clock skew has been detected and it suspends the VM. I've previously used Windows 8 VMs (possibly with Workstation v.15, but for sure with v. 14) and this did not happen. Can anyone tell me how I can use my VM offline?