Hello, I have a Domain with 250 computers. I have configured that all machines use proxy through Group policy in Active Directory. When a computer logon on my domain then the group policy write in internet settings -> lan configuration -- IP of my proxy. I want that when my Primary ISA server fails then change the lan settings in all clients to use the Backup ISA. I have tried using in ISA Management --> client settings->Web explorer - > the backup route ( Isobackupmad01 ) but it doesn't work. Could someone suggest me something?