Update the ESXi host off of ESXi 6.7 U2 to ESXi 6.7U3 and above.
Workaround:
To address this problem use one of these workaround options:
1. CTRL + ALT + WINDOWS KEY + DEL
2. Download the VMware remote console and then send the CTRL-ALT-DEL keys to the Virtual Machine.
3. Need to browse the vCenter either by using the Microsoft Edge or Internet Explorer