login to the query service failed vcenter 5.5

The problem may be because FQDN settings on VCENTER :

Symptoms

• Unable to query the virtual machine details using the vCenter Server search option.
• Querying the virtual machine details using the vCenter Server search option fails.
• You see the error:

Login to the query service failed. The remote name could not be resolved.

• Querying for virtual machines directly within the ESX host works properly.

Cause

This issue may occur if an incorrect FQDN is referenced in the vCenter Server Advanced Settings. This can be due to DNS issue and FQDN is not able to resolve in the Environment.

Resolution

To resolve the issue if FQDN is incorrect :

1. Navigate to Administration > vCenter Server Settings… > Advanced Settings .
2. Update these attributes with the correct FQDN for vCenter Server:

   VirtualCenter.VimApiUrl : https://<vCenter Server FQDN>:443/sdk
   VirtualCenter.VimWebServiceUrl : https://<vCenter ServerFQDN>:8443/vws

3. Restart the VirtualCenter Management Webservices service.

The another option is multiple domains :

When you try to access to VCENTER from another dmain, you can’t do query properly. What you need is to add VCENTER address  in your host files