How to fix packets dropped due to Multicast IGMP state not found

In this article you will learn how you can fix packets dropped due to Drop Code: 166(Multicast IGMP state not found).

First thing you will have to do is enable Multicast. 

• Navigate  to Firewall Settings, and then select Multicast.
  
  

In the new menu you have to do the following:

• toggle Enable Multicast
• have "Require IGMP Membership reports for multicast data forwarding" disabled
• toggle "Enable reception of all multicast addresses"

If you still require assistance, please contact Technical Support

There are two ways to contact technical support:

1. Online: Visit mysonicwall.com. Once logged in select Resources & Support | Support | Create Case. 

2. By phone: please use our toll-free number at 1-888-793-2830. Please have your SonicWall serial number available to create a new support case.