VPN connection failure

[Polybag]

I recently upgraded my computer to Windows 11 and since then my VPN has not worked. I uninstalled the previous version and upgraded to the latest, to no avail.

I see it trying the connection on the Fortigate, but that's it.

Below is the client log.

11/26/2022 9:31:00 PM info ipsecvpn date=2022-11-26 time=21:30:59 logver=1 id=96566 type=securityevent subtype=ipsecvpn eventtype=status level=info uid=473E35B610DE464ABDxx5E9F5149E34C devid=FCT8003212200810 hostname=XXXXX pcdomain=N/A deviceip=192.168.0.41 devicemac=b0-XX-7a-72-XX-XX site=N/A fctver=7.0.7.0345 fgtserial=FCT8003212200810 emsserial=N/A os="Microsoft Windows 11 Professional Edition, 64-bit (build 22621)" user=Bryan msg="loc_ip=192.168.0.41 loc_port=500 rem_ip=00.000.00.165 rem_port=500 out_if=0 vpn_tunnel=REPLACED action=negotiate init=local mode=aggressive stage=1 dir=outbound status=success Initiator: sent 00.000.160.165 aggressive mode message #1 (OK)" vpntunnel=REPLACED
11/26/2022 9:31:12 PM warning ipsecvpn date=2022-11-26 time=21:31:11 logver=1 id=96561 type=securityevent subtype=ipsecvpn eventtype=error level=warning uid=473E35B610DE464ABD285E9F5149E34C devid=FCT8003212200810 hostname=XXXXX pcdomain=N/A deviceip=192.168.0.41 devicemac=XX-XX-XX-XX-XX-XX site=N/A fctver=7.0.7.0345 fgtserial=FCT8003212200810 emsserial=N/A os="Microsoft Windows 11 Professional Edition, 64-bit (build 22621)" user=Bryan msg="No response from the peer, phase1 retransmit reaches maximum count" vpntunnel=REPLACED locip=192.168.0.41 locport=500 remip=00.000.160.165 remport=500

I don't know what to do beyond this so any help would be appreciated.

[freber]

@Quint021 How are we progressing with this!?

[Anthony_E]

Hello,

The best to share it privately, is to open a TAC ticket:

https://support.fortinet.com/welcome/#/

Regards,

[danger]

Are there any solutions or tipps available since we are also struggling with some Win11 notebooks and VPN connection concerning the same error message: No response from the peer, phase1 retransmit reaches maximum count