FortiClient is getting disconnected after 5 seconds

[Anubhavk]

Dear Team,

I have Fortigate 101F servicng as SSL VPN firewall. We are using forticlient to connect to SSL VPN. Out of 200 users 2 of them are facing issue, FOrtiClient get connected but disconnect immediately after 5 seconds. Here is the debug log please help.

7/7/2022 3:10:12 PM info system date=2022-07-07 time=15:10:11 logver=1 id=96900 type=traffic subtype=system eventtype=traffic level=info uid=A39433206A3A4C9AA65EDA98C08C079D devid=F**** hostname=L***** pcdomain=abc.IN deviceip=192.168.1.103 devicemac=**-**-**-** site=N/A fctver=7.0.5.0238 fgtserial=F****** emsserial=N/A os="Microsoft Windows 10 Enterprise Edition, 64-bit (build 18362)" user=abc@abc msg="Traffic log" sessionid=2918467934 srcname=sslvpn srcport=0 direction=outbound dstip=X.X.X.X dstport=443 proto=6 rcvdbyte=34359738368 sentbyte=64424509768 utmaction=passthrough utmevent=vpn threat=disconnect userinitiated=0 browsetime=0
7/7/2022 3:11:20 PM info sslvpn FortiSslvpn: 22644: fortissl_connect: device=ftvnic
7/7/2022 3:11:21 PM info sslvpn FortiSslvpn: 7628: PreferDtlsTunnel=0
7/7/2022 3:11:24 PM error sslvpn FortiSslvpn: 23492: error: poll_recv_ssl -> SSL_get_error(): 5
7/7/2022 3:11:24 PM error sslvpn FortiSslvpn: 23492: error: poll_recv_ssl -> WSAGetLastError():2745
7/7/2022 3:11:24 PM info sslvpn FortiSslvpn: 23492: error: polling recv, try:1

Thanks

[Anubhavk]

OS is windows 10 I tried with 5-6 client versions but still not working

[quarinteen]

Has anyone figured this out? I am experiencing the same issue. I thought it was an MTU issue but that was not it. 

[Cristiano_]

I too have the same problem.
How did you solve it?