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Azure VPN Gateway
An Azure service that enables the connection of on-premises networks to Azure through site-to-site virtual private networks.
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Hi Rao Atluri,
Welcome to the Microsoft Q&A and thank you for posting your questions here.
Could you please try this troubleshoot steps to resolve the issue
- Reset the connection.https://learn.microsoft.com/en-us/azure/vpn-gateway/reset-gateway#connection-reset
- check the check the IKE logs on on-prem device.
- Most of the cases gateway will not respond on this scenario need to check with your on-prem VPN device.
Kindly let us know if the above helps or you need further assistance on this issue.
Thanks,
Rohith