Hi Alex - The first log entry 'ipsec.warn ESP tunnel expired in:0x898A83A6, out:0x45B28332' indicates that the ESP communication channel is expiring. I would check the following: 1. Have your IT admin check the Pulse Connect Secure gateway for the idle and max timeout values for the role assigned to you when using Pulse Linux client. (it is possible you are assigned a different role when accessing from windows which has a longer timeout value) 2. Note the timestamp of a disconnect. Have your IT admin check the 'user access logs' for your ID around that timestamp. This may indicate why your session was dropped. 3. If the timeouts are the not the issue the next step will be to start tcpdump on your machine's physical interface and also on the virtual VPN interface/adapter. Once timeout occurs check the tcpdump captured on physical interface and check the ESP packets (usually UDP 4500) If the ESP packets have stopped arriving from gateway it could indicate an issue where an intermediate device (firewall) has closed the UDP socket. This is not exhaustive list, let us know what you find out. Thanks
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