troubleshooting Question

Connections to 2012R2 L2TP Server Fail From Windows Client But MAC OS X Works OK

Avatar of Declaro
Declaro asked on
* RRASWindows Server 2012* l2tp
6 Comments2 Solutions72 ViewsLast Modified:
Hello all,

I have a small Domain network and have set up RRAS on the server to accept L2TP connections using a pre shared key.

VPN works fine from Mac OS X & IOS Clients but always fails from Windows clients.

I have added the AssumeUDPEncapsulationContextOnSendRule registry value to


As in this Microsoft KB Link but the connection still fails

NPS is set up and working fine for VPN and Remote Desktop Gateway connections

Any advice is welcomed..



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