FortiGate: Some user (In middle east - Asia) strucking while connecting VPN IPSec via FortiClient
We found some client site (Middel East - Asia) in Saudi Arabia and Dubai cannot connect IPSec VPN to host in Thailand. It will strucking with connecting status after enter the password.


Cause:
It may cause of some .dll missing for windows update.
This may fixed by install the C++ runtime.
Solution:
Download and insall MS Visual C++
x64 (64-bit): vc_redist.x64.exe
https://aka.ms/vs/17/release/vc_redist.x64.exe
x86 (32-bit): vc_redist.x86.exe
https://aka.ms/vs/17/release/vc_redist.x86.exe
After install / repair successful try to connect FortiClient VPN with IPSec again.
Ref: https://community.fortinet.com/t5/Support-Forum/FortiClient-VPN-Stuck-on-quot-Connecting-quot/td-p/320985/page/2
Ref: https://learn.microsoft.com/en-us/answers/questions/4167106/dll-files-missing-after-windows-11-update?forum=windows-all&referrer=answers