We had a client where a working VPN setup suddenly stopped working with error
“The user OLX\user connected to port VPN2-24 has been disconnected because no network protocols were successfully negotiated.”
We validated telnet to port TCP 1723 was working from outside.
Validated VPN configurations and found them OK
Found some articles where it was asked to switch to static IP Pool, but we were already static.
Checked other misc settings and found something strange,
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