Routing and Remote Access VPN DHCP error

M

Mothemonk

I have a strange problem.

I have a client that is using Server 2012 Standard.

On this server they have Routing and Remote Access configured for VPN client access. Their users that are working outside the office connect to the VPN to access the internal network.

The VPN works fine for the most part. Recently however, it has started having issues.

Periodically (about once every 8 days) I will hear from them that they cannot connect and that they get error 720. I will check the server and the server will have the following errors in the event log:

Warning: No IP address is available to hand out to the dial-in client.

If you check DHCP the server is running fine and will hand out local addresses but it will not hand out addresses to VPN clients. Also the addresses that it HAS previously handed out to VPN clients will not show in the address leases.

The solution strangly enough is to disconnect and reconnect a the VPN client connection that the server has connecting it to a offsite server that it does a SQL sync with.

Any ideas as to what might be causing this? If need be I can post more detailed logs but I am not sure what logs even to post or what data to collect.

Any help is greatly appreciated.

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