Hi,
At 6PM yesterday our S2S connection which has been running perfectly just stopped working. No changes were made to the on-prem environment and RRAS throws event id 20111
"A Demand Dial connection to the remote interface Azure on port VPN2-127 was successfully initiated but failed to complete successfully because of the following error: The network connection between your computer and the VPN server could not be established because the remote server is not responding. This could be because one of the network devices (e.g, firewalls, NAT, routers, etc) between your computer and the remote server is not configured to allow VPN connections. Please contact your Administrator or your service provider to determine which device may be causing the problem."
I've tried to re-create the connection to no avail.
Any ideas?
Br,
Chris