topic Re: VPN connection disconnects after few seconds in SASE and Remote Access

VPN connection disconnects after few seconds

Webnoob — Mon, 28 Jul 2025 13:59:13 GMT

I have Quantum Spark 1570 Appliance installed firmware R81.10.17.
Gateway have Radius connection to AD and have Azure MFA extension installed on NPS server.

I have one user who is unable to keep VPN connection .
Connection is established but after a few seconds get disconnected.

I have collected log from the client but not sure what I should be looking for.

User is running Windows 11 ver. 24H2 Build 26100.4652 and VPN client E88.30 Build 986105506

It is only that one user who is experiencing this problem.

Re: VPN connection disconnects after few seconds

Chris_Atkinson — Mon, 28 Jul 2025 14:14:51 GMT

Recommend updating him/her to E88.62 or later per:

https://support.checkpoint.com/results/sk/sk182749

Re: VPN connection disconnects after few seconds

Webnoob — Mon, 28 Jul 2025 14:16:06 GMT

Actually just upgraded to E88.70 and the symptoms are different. Now the client is reconnecting after 20 sec, connected and again reconnecting in an endless cycle.

Re: VPN connection disconnects after few seconds

the_rock — Mon, 28 Jul 2025 14:56:22 GMT

I know latest client version, E89, is pretty stable. See if that makes any difference.

Andy

Re: VPN connection disconnects after few seconds

Webnoob — Mon, 28 Jul 2025 15:05:39 GMT

Cannot find E89.x for Windows, only MacOS

Re: VPN connection disconnects after few seconds

the_rock — Mon, 28 Jul 2025 15:08:16 GMT

https://support.checkpoint.com/results/download/135200

Re: VPN connection disconnects after few seconds

G_W_Albrecht — Mon, 28 Jul 2025 15:10:30 GMT

Anything that makes this users machine so special compared to the others that work ? Can other users logging into RA VPN on this machine see the same issue ?

Re: VPN connection disconnects after few seconds

Webnoob — Mon, 28 Jul 2025 15:12:25 GMT

Other users using this machine for RA VPN is experiencing the same issue.

Re: VPN connection disconnects after few seconds

G_W_Albrecht — Mon, 28 Jul 2025 15:16:02 GMT

I do not think new versions will resolve the issue as this is the only client with it. Better completely re-image the workstation, only install needed SW and retry!

Re: VPN connection disconnects after few seconds

Webnoob — Mon, 28 Jul 2025 17:47:31 GMT

I have testet the issue all possible ways
The last thing I noticed was when the computer where connected to mobile hotspot the computer connected to the internet with the same WAN ip as the firewall has.
Next time I am onsite I will test it with other devices and check if any static routes have been configured or if there are any misconfigured ip addresses.

Re: VPN connection disconnects after few seconds

the_rock — Tue, 29 Jul 2025 00:20:16 GMT

That actually sounds logical.

Andy

Re: VPN connection disconnects after few seconds

Timothy_Hall — Tue, 29 Jul 2025 12:23:16 GMT

There are quite a few things that can cause this exact behavior, see here:

sk44075: Endpoint Connect client disconnects every 20 seconds after connecting successfully to VPN Gateway

sk172184: Remote Access client behind NAT disconnects after 20 seconds in Visitor Mode

Re: VPN connection disconnects after few seconds

Webnoob — Tue, 29 Jul 2025 12:37:57 GMT

The symptoms in sk44075 are not pressent in the log.

The fix applied in R80.40 should be in the running R81.10.17 firmware, so not sure sk172184 applies to my issue.

Re: VPN connection disconnects after few seconds

the_rock — Tue, 29 Jul 2025 12:52:48 GMT

I still think point 4 would be good to check from the sk44075.

Andy

Re: VPN connection disconnects after few seconds

Webnoob — Tue, 29 Jul 2025 12:55:20 GMT

You might have overseen that the device is Quantum Spark 1570 Appliance locally managed

Re: VPN connection disconnects after few seconds

the_rock — Tue, 29 Jul 2025 12:56:53 GMT

k, nm then, not applicable. Any luck if you tried E89 client?

Andy

Re: VPN connection disconnects after few seconds

Webnoob — Tue, 29 Jul 2025 12:58:04 GMT

Tried E89.00 and the symptoms changed to are reconnecting loop

Re: VPN connection disconnects after few seconds

the_rock — Tue, 29 Jul 2025 13:16:03 GMT

I would definitely open TAC case for this then.

Andy

Re: VPN connection disconnects after few seconds

Chris_Atkinson — Tue, 29 Jul 2025 13:21:27 GMT

Does the device have multiple WAN interfaces in use?

Advanced Settings wise we have two parameters with 20-second values.

One for back connections the other for SNX keepalives.

Re: VPN connection disconnects after few seconds

Webnoob — Tue, 29 Jul 2025 13:57:08 GMT

Already done that