Validate Installation and Configuration > Single Sign-on Checks
  
Single Sign-on Checks
The following SSO checks should be completed before attempting to perform the authentication check and the proxy check.
• Group Synchronization Check (SSO only)
• Public Access Check (SSO only)
These checks verify that the ThingWorx server is properly configured as a Resource Provider and responds to access tokens correctly. If the ThingWorx server is not properly configured as a Resource Provider then many of the other checks will fail.