Have the same issue wit a Consultant PC Windows 11 7.0.7 and 7.2.0 Fre VPN Client. What I have seen or find out additionally. Firewall is not getting any Packet from the assigned IP Address. The internal DNS Servers are added but not the IP address we stay with 169.254.0.0. Adapter shows Network indentifying for ever because of missing IP Address. On Firewall side all looks good.
From another Post (Windows 11 22H2 update, FortiClient VPN doesn't work):
James Morales: I have been researching and digging into this for a while and stumbled on the solution you need to uninstall (KB2693643), just did it on my machine and FortiClient connected with no issue.
Former Post with workaround:
I have this same issue, the VPN connects just fine but the IP never updates and using the work around to manually configure the Network connections is the only way to get it to work. There is no issue with the network, I have tried in numerous locations and it seems to be consistent with just the one PC with Windows 11. Everyone else in the company has no issues connecting to the VPN. Everything is configured properly so its not network, in an effort to try and figure out if its an issue with my profile I reinstalled windows 11 and the issue remains.