Explanation: A bidirectional link must be created in order to establish a successful connection. For example, to peer VNet A to VNet B, a link must be created from VNetA to VNetB and from VNetB to VNetA. Creating both links will change the state to Connected. https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#my-vnet-peering-connection-is-in-initiated-state-why-cant-i-connect