The web client Installation hangs after putting in the site name and port, and it won't go past that point. When you click "next" it hangs indefinitely. In some situations, it displays a "No Coordinators found" when choosing one from the Installation wizard GUI:

Attempt a manual installation of the web client using MSIEXEC and passing the coordinator IP/Port to the installation package as a command line switch from an elevated cmd prompt:
MSIEXEC /i "c:\path_to\installation_file\Quest Change Auditor Web Client (x64).msi" COORDINATOR_IP_PORT=coordinator.fqdn:{client_port}
Example:
MSIEXEC /i "c:\temp\Quest Change Auditor Web Client (x64).msi" COORDINATOR_IP_PORT=coordinator.mydomain.local:51123