I am not able to go to the web/vmrc console of the VMs from a specific cluster due to the "The console has been disconnected". Issue is specific to one cluster, and the console works for VMs from other clusters in the same vcenter. I tried bringing one of the working VMs from other cluster to the problematic cluster, and the issue affects the migrated VM as well. I am able to open the VM console from ESXi server directly though.