Ipsec VPN couldn't established.

Hi, I have configured the tunnel from DC to another location, The tunnel couldn't established. I don't know what is the reason the tunnel has down. I have debug the issue still unable to find out the...
IPSEC connection showing this error Couldn't authenticate the local gateway. Check the authentication settings on both devices.

We are trying to setup a IPSEC tunnel between a Sophos Firewall and a ISR4300 After activating its showing error Couldn't authenticate the local gateway. Check the authentication settings on both devices...