6.0.3

Table Of Contents
Troubleshooting vCenter Single Sign-On
Conguring vCenter Single Sign-On can be a complex process.
The following topics provide a starting point for troubleshooting vCenter Single Sign-On. Search this
documentation center and the VMware Knowledge Base system for additional pointers.
Determining the Cause of a Lookup Service Error
vCenter Single Sign-On installation displays an error referring to the vCenter Server or the vSphere Web
Client.
Problem
vCenter Server and Web Client installers show the error Could not contact Lookup Service. Please check
VM_ssoreg.log....
Cause
This problem has several causes, including unsynchronized clocks on the host machines, rewall blocking,
and services that must be started.
Solution
1 Verify that the clocks on the host machines running vCenter Single Sign-On, vCenter Server, and the
Web Client are synchronized.
2 View the specic log le found in the error message.
In the message, system temporary folder refers to %TEMP%.
3 Within the log le, search for the following messages.
The log le contains output from all installation aempts. Locate the last message that shows
Initializing registration provider...
Message Cause and solution
java.net.ConnectException:
Connection timed out: connect
The IP address is incorrect, a rewall is blocking access to vCenter Single
Sign-On, or vCenter Single Sign-On is overloaded.
Ensure that a rewall is not blocking the vCenter Single Sign-On port (by
default 7444) and that the machine on which vCenter Single Sign-On is
installed has adequate free CPU, I/O. and RAM capacity.
java.net.ConnectException:
Connection refused: connect
IThe IP address or FQDN is incorrect and the vCenter Single Sign-On
service has not started or has started within the past minute.
Verify that vCenter Single Sign-On is working by checking the status of
vCenter Single Sign-On service (Windows) and vmware-sso daemon
(Linux).
Restart the service. If this does not correct the problem, see the recovery
section of the vSphere troubleshooting guide.
vSphere Security
60 VMware, Inc.