Just to correct myself, this is not an SMB protocol issue. I believe this has to do with the inherent reliability issues surrounding the UDP protocol.   Unlike TCP, UDP can't re-transmit lost data packages. This becomes a problem when downloading large files; one lost package and the entire download fails.   When analyzing a file download using MS Network Monitor 3.4, it's apparent that the IPv4 internet protocol, together with ESP data packages (encrypted data) encapsulated within UDP data packages, are used. UDP is fast and great for streaming services, where loss of single data packages is uncritical; it's just a missing pixel on the screen.   I wish Meraki offered a TCP solution with its VPN server, which should solve this problem. ... View more

What about traffic logs on the MX64? ... View more

Are there any network monitoring/logging tools that can help cast light on the root cause? If AnyConnect works, does that not rule out W11? I believe I experienced similar issue with W10. Also, I tested download of large file (>1 GB) via FTP server (connecting via VPN connection) and it worked fine. ... View more

I don't believe Group Policies are at issue. File Explorer (SMB protocol) or an internet browser breaks the Meraki VPN connection when I download large files >500Mb. However, when I tested download via FTP, there was no issue downloading a multiple GB sized file. ... View more

Thanks for the input. Metered connection was off.   I then tried to set Allow VPN over metered networks to off as well (under settings for the VPN connection), booted my PC and reconnected to the VPN. I was then able to download the +500Mb file. But when proceeding to download +2GB file, download stopped at ~100Mb and the VPN connection dropped again. Only common denominator seems to be that download of large files fails. ... View more

CarlosCoque, were you able to find a solution? Same basic issue here with MX64. The download simply terminates and the connection drops after downloading about 50% of large (~500Mb) file. Thanks. ... View more

I can too. Thanks to everyone on this thread. ... View more

You're correct. ... View more

I believe KB5010793 was a separate issue, which was resolved by Microsoft 3 days ago. See https://docs.microsoft.com/en-us/windows/release-health/status-windows-10-21h2#2773msgdesc.   After I applied Microsoft's fix (KB5010795), Client VPN worked fine for me again. Then today, suddenly the "718 error" appears out of nowhere. Cannot connect from any OS. ... View more

I agree. I have the same issue suddenly appearing across Windows 10, Windows 11, and Android devices that used to work fine. "The error code returned on failure is 718." ... View more