An ESXi host displays the following error message or similar in the summary pane of the ESXi host, in the vCenter GUI:
Virtual machine creation may fail because agent is unable to retrieve VM creation options from the host (N5Vmomi5Fault17HostCommunication9ExceptionE(Fault cause: vmodl.fault.HostCommunication ) <N/A>zKq7AVICAgAAANVUewETdnB4YQAA88lHbGlidm1hY29yZS5zbwABOFwcdnB4YQAB5r4dAeQMKgHqDSoChjYZbGlidm1vbWkuc28Ag+z9CgFsaWJ2aW0tdHlwZXMuc28AAeWdLgHUny4BSKwmAUHmJgHe3xsBheAbAAhILQAe2ywA4P8sAEtQUgRSeABsaWJwdGhyZWFkLnNvLjAABT9SD2xpYmMuc28uNgA=<N/A>).
VMware ESXi 7.x
VMware ESXi 8.x
VMware vCenter 7.x
VMware vCenter 8.x
The ESXi management agents on the ESXi host have stopped or may not be responding properly to the VCSA.