After updating to Windows 11 Pro, I was receiving this error when trying to connect to my VPN: "the connection was terminated by the remote computer before it could be completed". In reviewing the Event Viewer logs, I saw the following error: CoId={47DD9B6D-A8EC-0007-5147-DE47ECA8D701}: The user SYSTEM dialed a connection named VPN which has failed. The error code returned on failure is 628. After an hour of troubleshooting (re: googling), I came across this page which worked for me and resolved the issue: https://documentation.meraki.com/MX/Client_VPN/Client_VPN_OS_Configuration#Windows_10. Evidently, the upgrade fiddled with my VPN > Properties > Security settings. I had to enable "Require encryption (disconnect if server declines)", and then select "Allow these protocols" > Unencrypted Password (PAP). After this change, I was able to successfully connect to my VPN. Note: Your mileage may vary depending on OS version, VPN requirements, and other unseen factors which may come into play.
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