I recently had the same issue and fixed it by looking at the event log in windows.
Windows Start > type Event Viewer
Under Applications you will see the RASclient entries and error codes
I was seeing error code 720.
I made sure my config matched the instructions: https://documentation.meraki.com/MX/Client_VPN/Client_VPN_OS_Configuration
(IT DID)
What I actually did to fix my issue was head on over to Windows Device Manager > Network Adapters
Delete the WAN MINIPORT for IP as well as for L2TP.
![ToryDav_1-1629305961640.png ToryDav_1-1629305961640.png](https://community.meraki.com/t5/image/serverpage/image-id/19742iAF7D36750DE9FC45/image-size/medium?v=v2&px=400)
Then above click the
icon to scan for new changes. You will see them return.
Deleting the IP Miniport was the only thing that fixed this for me after I checked configuration, enabled firewall rules and looked at both logs in Meraki and Windows.
Hope it helps!
Tory
Let's connect on linkedin!