SSL Client 2.1 VPN adapter install error

Question

Hello, 
 I tried to install the VPN Client 2.1 from utm user portal. Like many times before. Now I get an error concerning the tab windows driver on three New ThinkPads. 
 I tried to install the driver from different openvpn builds. But nothing worked. 
 I cant find any entry in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318 
 The Installation continues and the traffic light appears but a connection is not working. 
 Any Ideas? 
 
 Output folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\bin Extract: openvpn.exe... 100% Extract: libeay32.dll... 100% Extract: ssleay32.dll... 100% Output folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\bin Extract: openvpn-gui.exe... 100% Create folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\log Create folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\config Output folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\bin Trying to remove previously installed service OpenVPN Service removed. Stopping OpenVPN Interactive Service. OpenVPN Interactive Service stopped. OpenVPN Interactive Service removed. Extract: openvpnserv.exe... 100% Create folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\log We are running on a 64-bit system. Output folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\bin Extract: tapinstall.exe... 100% Output folder: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\driver Extract: tap0901.sys... 100% Extract: tap0901.inf... 100% Extract: tap0901.cat... 100% Create folder: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Sophos\Sophos SSL VPN Client Create shortcut: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Sophos\Sophos SSL VPN Client\Uninstall Sophos SSL VPN Client.lnk Create shortcut: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Sophos\Sophos SSL VPN Client\Sophos SSL VPN Client.lnk Installing configuration files: OK tapinstall hwids tap0901 returned: 0 Updating SSL VPN adapter Updating drivers for tap0901 from C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\driver	ap0901.inf. tapinstall.exe failed. tapinstall update tap0901 returned: 2 Cumulative SSL VPN adapter installation status: 2 Warning: could not set interface metric for Sophos SSL VPN Adapter Installing SSL VPN service OpenVPN Service installed. OpenVPN Interactive Service installed. [SC] ChangeServiceConfig2 ERFOLG Service Started Created uninstaller: C:\Program Files (x86)\Sophos\Sophos SSL VPN Client\Uninstall.exe Completed

Erik Puscher · Accepted Answer

I managed to get it to work again. Maybe this is interesting for others. So this is my unconventional solution. 
 
 1) Install SSL Client 2.1 from User Portal. Error appears but install continues. Traffic Light is shown up. No Entry in Network Adapters in Device Manager can be found. 
 2) Install openvpn-install-2.4.6-I602. Only select TAP Adapter. Error appears but install continues. TAP Adaptor is shown in Device Manager, but with alert sign. 
 3) Right click TAP Adaptor with alert sign. Get new drivers. Windows says best driver already installed. After this windows requests a reboot. 
 4) After reboot the alert sign in Device Manager is removed. Then install again SSL Client 2.1 from User Portal. Finally installation runs with no errors. Entry in Device manager is changed from TAP Adaptor to Sophos SSL VPN Adapter. 
 Odd procedure but for me it worked on three notebooks.