New Host cannot join vCenter

I found my new installed VM host (vSphere 5.5) cannot able to join the vCenter.
It shows error
"Call "Datacenter.QueryConnectionInfo" for object "HKDC" on vCenter Server "XXXX" failed."

However, I can use vSphere client to connect this new installed VM host without any problem.

Any idea?

Thanks.
VMHost_cannot_join_vCenter.jpg
Member_2_7970870Asked:
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Richardson PortoSenior Infrastructure SpecialistCommented:
Can you confirm the exact build version of your vCenter Server and the ESXi host ?
Member_2_7970870Author Commented:
vCenter version: 5.5.0, 1750787
ESXi version: 5.5.0, 3568722
Richardson PortoSenior Infrastructure SpecialistCommented:
Based on your build numbers you have the following versions:
ESXi: 5.5 Express Patch 10
vCenter: 5.5 Update 1a

And since you ESXi version is higher than 5.5 Update 3b you will not able to add them to your vCenter due to incompatibility.

You have two options:
1) Upgrade your vCenter Server to 5.5 Update 3b or higher (lastet is Update 3e)
2) Downgrade your ESXi host to a previous version

Here is the VMware KB article talking about this compatibility issue: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2140304

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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You are using the wrong version of vCenter Server, oddly due to changes in the HOST software, your ESXi 5.5 vCenter Server Build version must be the same or later than the host version.

So you will need to upgrade your vCenter Server build version. This is quite simple, just make sure you have a backup or CLONE for rollback purposes, download the later version, mount the ISO, and run the setup programs, and it will detect and upgrade the components.

You can check these details here

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