There are issues communicating with the following vCenter Server(s) : Failure to authenticate with the server

 Getting this error.  Tests 1-3 are vmware suggested, the rest are from me, the last one is from searching.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2004720

Cause

This issue may occur as a result of an incorrect name resolution, or if an nslookup results in an error for one of the vCenter Server's Fully Qualified Domain Name (FQDN).

Resolution

Steps To resolve this issue:

1. Verify if there are any DNS issues using nslookup. Correct any invalid DNS entries for the vCenter Server that reports the nslookup error.

NO DNS issues

2. When the DNS entry is corrected, check if the vSphere Client connection to both the vCenter Servers shows both the instances in the vCenter inventory.

Nope

3. If the issue still exists, dis-join (Isolate) the vCenter instance from the Linked Mode, then join it back.
   

Note: For more information on Linked Mode DNS and how to isolate and re-join a vCenter Server to a Linked Mode Group, see the vSphere Datacenter Administration Guide.

Nope removed and reconnected same thing.

4. Firewall off?

Turned off firewall at other vcenter host.

Same thing…

5. Restarting both vcenter servers

Nope same thing.

6. Is the PC you are using the vCenter client on a member of the domain that the vSphere vCenter servers are a part of?

Pasted from <http://communities.vmware.com/message/1680745>

No it isnt. Hmmm…..

That was it! Lol.

The vsphere client ALSO has to be able to resolve both vcenter servers, not just the vcenter servers resolving one another….