Hyper-V-Installation breaks NCP/Lancom Advanced VPN Client by adding Hyper-V Extensible Virtual Switch

I installed Hyper-V on my Windows 10 laptop and after that, my LANCOM Advanced VPN Client was not able to communicate with my company network any more.
I took very long to connect to the VPN router and even after the connection was established (green), no communication with computers in the company network was possible.

How-i-fixed-it:
I found out, that Hyper-V setup added couple of virtual network adaptors "vEthernet" to the network settings and a Network bridge device.
The existing network adaptors got added a new device to use "Hyper-V Extensible Virtual Switch" instead of their standard IP settings. It looks to me as this breaks the LANCOM VPN Client Ethernet adaptor.
I went to the settings of the LANCOM Ethernet Adaptor in the network settings and unchecked the "Hyper-V Extensible Virtual Switch". It automatically checked the standard Elements like IPv6, IPv4 and others.
Doing so, the VPN connection was established as fast as before and i was able to communicate over the tunnel without issues.

Lancom Advanced VPN Client NCP driver error / licence error under Windows 10

My Lancom Advanced VPN Client Version 3.0 showed an "NCP driver error" under Windows 10.
I downgraded to 8.1 and it worked OK again.

I then found on the LANCOM support page, i have to wait for version 3.02 which will work with Windows 10.

After the release of 3.02 i upgraded my VPN client software and then upgraded to Windows 10 again.
Unfortunately, under Windows 10, the software kept compaining about being not activated or an invalid licene.

How-I-fixed-it:
I did a profile backup, deactivated and uninstalled the software and did a fresh install.

To avoid problems with Lancom Advanced VPN client at Operating System upgrades, follow the steps described here: https://www.lancom-systems.de/en/service-support/instant-help/common-support-tips/

 

08/04/15

Operating the LANCOM Advanced VPN Client with Windows 10

Operating the LANCOM Advanced VPN Client on a Windows 10 operating system requires a product key for version 3.0.

 

Notice about updating your operating system to Windows 10:

When updating the operating system from Windows 7, Windows 8 or Windows 8.1 to Windows 10, please ensure that you uninstall the LANCOM Advanced VPN Client before you carry out the Windows update.

 

We recommend that you also secure any configuration file(s) and certificates separately. Instructions are available in the following Knowledge Base article.

Only after completing the update to Windows 10 can you install the current version of the LANCOM Advanced VPN Client (version 3.02 or higher).