FortiClient - irregular disconnect for no obvious reasion

[chrisacn11]

Dear Forum,

In unfrequent timeslot, users get disconnect from the IPSec FortiClient Session. I do not know, what is the issue of it. Users can relogin again (mostly) without any problem. I aussme, there might be a configuration issue. Is there any keep alive setting, which might be broken? 
Is there a best pracise guide / guidance to double-check the settings?

Thank upfront for any hint.

Chris

[xshkurti]

@chrisacn11 
Check this link:

Configuring an IPsec VPN connection | FortiClient 7.2.4 | Fortinet Document Library

Maybe DPD can help you

[hbac]

Hi @chrisacn11,

Does it happen to all users? What is the version of FortiGate and FortiClient? You need to check VPN event logs on FortiGate to see why it disconnected. You can also collect debug log from FortiClient by following this article: https://community.fortinet.com/t5/FortiClient/Technical-Tip-How-to-enable-debug-log-in-FortiClient/t...

Regards,