Whenever establishing a connection is attempted by accessing the WIFI/NETWORK option from the system tray, the connection freezes. This happens while using Meraki Client VPN, the cause of such problem is a bug in windows 10.
While delving in the Meraki event log, following list appears.
Mar 28 7:10:48 Non-Meraki / Client VPN negotiation msg: failed to begin ipsec sa negotiation.
Mar 28 7:10:48 Non-Meraki / Client VPN negotiation msg: no configuration found for x.x.x.x.
Mar 28 7:10:24 Non-Meraki / Client VPN negotiation msg: IPsec-SA established: ESP/Transport x.x.x.x[4500]->82.7.39.246[4500] spi=2174933844(0x81a2db54)
Mar 28 7:10:24 Non-Meraki / Client VPN negotiation msg: IPsec-SA established: ESP/Transport x.x.x.x[4500]->82.7.39.246[4500] spi=190939951(0xb61832f)
Mar 28 7:10:24 Non-Meraki / Client VPN negotiation msg: ISAKMP-SA established x.x.x.x[4500]-x.x.x.x[4500] spi:2fcc04ff9ff90469:779439138b14820c
Mar 28 7:10:24 Non-Meraki / Client VPN negotiation msg: invalid DH group 19.
Mar 28 7:10:24 Non-Meraki / Client VPN negotiation msg: invalid DH group 20.
The error arise again as soon as plurality of connections are established or when, the laptop went to sleep. Even, when the client is reboot the issues is not resolved.
SOLUTION:
Above stated cause of this problem is a bug in Windows 10 because when you establish a connection via Windows Settings then it is resolved. As shown in the screenshot below :
