We have been using the Meraki Client VPN for over a year now for a few users with zero issues. Randomly during the holiday week last week it stopped working. No one was working so no changes/updates were made and I can not get it functioning again.
It's setup to use Active Directory and the Domain Controller and Bind user are all still functioning properly and I've rebooted it to be sure. I have not rebooted the actual MX device as of yet.
See error message and relevant log.
I've already tried adding the Registry fix for the Error 809 found here (https://documentation.meraki.com/MX/Client_VPN/Troubleshooting_Client_VPN#Windows_Error_789)
Any other ideas?
What OS is it not working on?
What happens if you rebuild the VPN connection from scratch?
What happens when you use rasphone.exe directly in Windows?
If you're having issues with Win10, I've got scripts in my signature that you can harvest from. Read the comments to understand what each piece does.
So you're still getting 809 errors on your end point?
Is your MX behind NAT?
Any errors on your AD server?
Any different with Meraki cloud credential?
Have you called support?
Edit: Also, did you reboot after adding the registry key? Won't take effect otherwise.
Some items to check.
Are all endpoints not able to VPN in?
Have the AD domain admin creds changed?
Certificate on the server expired?
LAN IP of the AD server changed?
Certificate is a great item to check. We had one expire and mysteriously 802.11x just up and stopped working on us
until we got a systems engineer to check the AD server and, ah ha, wouldn't you know it.
If you haven't done so already, double-check the security settings of the VPN adapter, found via "VPN > Change adapter options under Related settings." Should be 'allow these protocols" with only PAP selected.
If these are Dell machines make sure you remove SmartByte.
Device is not trying to VPN in from behind the MX?
Windows 10 Pro?
Is Xbox Live Networking Service off?
Also to verify you have encryption set to optional, not required on the adapter properties?
Any other 3rd-Party Software affecting these systems (Endpoint security, AV, etc.)?
Tried limited boot with majority of services/programs disabled?
Uninstalled any existing VPN software?
Checked Windows Reliability Monitor for recent updates/issues/performance?
Tried network reset? (netsh int ip reset)
Have you tried a different device to VPN in with? (using a phone helps to rule that it an MS issue and not Meraki )