Troubleshoot virtual network peering issues The virtual networks are in different regions Troubleshoot a connectivity issue between two peered virtual networks Use Connection Troubleshoot and IP flow verify from the source VM to the destination VM to determine whether there is an NSG or UDR that is causing interference in traffic flows. Reference: https://learn.microsoft.com/en-us/azure/virtual-network/virtual-network-troubleshoot-peering- issues