An Azure service that enables the connection of on-premises networks to Azure through site-to-site virtual private networks.
How do I know if I need to take action?
You receive a notification from Microsoft that identifies your gateway as affected. If you receive this notification, follow the steps in How to update point-to-site VPN clients.
If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.
hth
Marcin