FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
shlee
Staff
Staff
Article Id 196390
Description

In the SSLVPN tunnel mode settings on the FortiGate, certain users may not be able to connect via SSL VPN tunnel mode or FortiClient. This could be due to an older driver .inf file for the SSL VPN client remaining in the system and causing the connection to fail.


Scope


Solution
Two possible solutions to correct this issue are given below:

1. Search the oem*.inf file for "pppop" in Windows. If there is more than one .inf file having "pppop", leave the latest one, remove all the older files, together with the matching .pnf file. Also remove the INFCACHE.* file.

Reboot the PC and  following the reboot the SSL VPN Client will be able to connect to the SSLVPN tunnel successfully.

2. Install FortiClientsslvpnsetup build2148 or above and then uninstall it. During the uninstall process, there will be an extra action performed which will delete all the older drivers from the system.

Finally, reinstall Forticlientsslvpnsetup and the SSL VPN Client will be able to connect to the SSLVPN tunnel successfully.

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