Wow!! James, I don't know where you found that, but you nailed it!!!! I had the same problem (Forticlient 7.0.7.0345, Windows 11 22H2:( Forticlient shows "Connected" and a valid IP address given via DHCP, however you cannot access anything on the corporate network, since your Fortinet SSL VPN Virtual Ethernet Adapter, actually gets an automatic IP (APIPA, 169.254.x.x) and not the one informed by Forticlient. I had already realized that forcing a fixed IP manually, plus mask and DNS on the Fortinet SSL VPN Virtual Adapter was a working workaround, but I was still trying different things everyday for the last 2 or 3 weeks to try to find a definitive solution. And the uninstall of KB2693643 was the only thing that really WORKED, and I tested it succesfully on the 3 computers where we were having this problem!! I did it easily with command "wusa /uninstall /kb:2693643" on the Command Prompt (opened as Admin). It just will pop up for a "Yes" to confirm. Then I didn't even need to restart. I tested the VPN connection again and it worked. On the other hand, I've seen that this patch is RSAT (Remote Server Admin Tools). In 2 of the computers with this problem, I am pretty sure that RSAT was installed, but the third one, no way, cause it was a regular user computer. Anyway, I won't worry that much and enjoy that it is fixed now. Thanks a million!!!!
Best regards, Marcelo