Load Balancer Configuration for BBIS

Ryan Miller

We have been using the BBIS event registration classic part for about 2 years and receive regular feedback that users can't register for our events. The feedback is that users can't advance past the ticket selection step in their registration. They click on the next button but the form does not move to the next step. We spoke with BB support but they could not provide a solution. In speaking with a CRM consultant they suggested that we adjust our load balancer settings. Specifically, they suggested that we change the machine key on one server so that both servers have the same machine key. I'm curious if anyone else using load balancers for BBIS has had the same problem and if changing the machine keys on the load balancer solved the issue?


Thank you for your feedback


Ryan

 

Michael Simion

Hi Ryan. I can't promise that your issue will be resolved simply by setting the machine keys to be the same, but it's definitely a good place to start. Whenever you're dealing with load balanced servers in IIS the machine keys must match - otherwise the session cookies created by one server won't be usable by the other.


When I last dealt with keys in BBIS, we were getting a fair number of "Validation of viewstate MAC failed" error messages in our event logs and we resolved this by ensuring each node had the same machine key. You may be able to uncover something similar in the event logs on your BBIS servers.

Ryan Miller

Hi Michael. "Validation of viewstate MAC failed" is one of the error messages we are seing in the logs. Thanks for your feedback.