ARC Session Times Out when two different URLs are accessed simultaneously. Why?

ARC Session Times Out when two different URLs are accessed simultaneously. Why?

It happens when you access two different ARC instances residing in the same server. Some server settings might get disturbed and hence this message appears. It is recommended to access one of the instance using the IP address. For example, use http://10.0.1.23:8080/ARC5.8 for one. The other can be accessed using local host http://localhost:8085/ARC5.8.