Have you tried deleting the VPN connection off the machine and re-creating it? It is common for Windows Update to change the security options of existing VPN connections. Also trying running rasphone.exe and connecting with that. What error code is it returning? See if it on these common Windows errors: https://documentation.meraki.com/MX/Client_VPN/Guided_Client_VPN_Troubleshooting/Unable_to_Connect_to_Client_VPN_from_Some_Devices
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