Good day,
I have an interesting problem where a VPN client Intermittently disconnects and then refuses to reconnect with the error:
"The LT2P connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer"
After 10-15 minutes, I am able to re-establish the connection. This happens several times a day.
In the past, after the January 2022 dreadful update I had to uninstall the latest security patch and then in August 2022 I had to add registry keys as per this article. But these issues normally resulted in a completely unusable VPN connection. Now this is on and off. I am at a loss.
Any idea what the issue is this time? Thank you.
Applliance: MX64, MX 16.16
Windows 10
This is commonly a CPE firmware issue. Try checking to see if your CPE has any updated firmed available.
You could also try power cycling the CPE in case it has gotten into a sad state.
Thank you. The only update I see is MX 16.16.6. Would that be it?
Also, what is CPE 🙂
No. I'm talking about the CPE that the user with the client VPN is sitting behind.
Ah, the only thing the client has is Windows 10 laptop > ISP router. I'll check the ISP router but it is likely up to date.
Try giving that ISP router a power cycle as well in case it is in a sick state.
The issue is usually related to bugs processing UDP flows and timing them out prermaturely.
Thanks,
I'll ask the client to power cycle their modem.
I also updated to MX 16.16.6 since it is a stable patch