To resolve this issue, enable NFS in the firewall.
To enable NFS in the firewall:
- From the vSphere Client connected directly to the host, go to Configuration.
- Click Security Profile.
- Select Properties under Firewall.
- Select NFS Client to open ports 0-65535.
- Remove the ESXi host from the domain.
- Add the ESXi host to the domain.
- Add the host back into Active Directory.