User Documentation

WWH error (WHH connection failed)

After successful registration the u-link VPN client

automatically is trying to initiate a WHH connection to the

u-link WWH server. If this fails it can be caused by

following reasons:

▪ PC cannot resolve DNS names

▪ An outgoing SSL connection using protocol TCP / port

443 cannot be established. Check if a corporate

firewall is blocking the outgoing connection. Configure

if necessary your proxy server settings.

Note: An error message indicating the connection

problem will be displayed.

VPN error (VPN connection failed)

Establishing a VPN connection (via button “Connect

VPN”) is only possible if you have a running WWH

connection. In case of a VPN failure – same as for a

WWH error - an error message will be displayed indicating

the connection problem.

General procedure in terms of solving a

connection error (WWH and VPN):

➢ Go to tab “Log / Support”

➢ Click button “Open” to inspect the Log file

➢ If you cannot solve your connection problem please

start the “Support Wizard” (which gathers all log

information) and send the resulting ZIP file to the

Weidmüller u-link Support

4.5 u-link VPN Client → Error management if the WHH connection or the VPN tunnel could not be established

Chapter 4 – Setup of a remote access scenario (Configuration Service PC)

Screenshot shows an

error message due to

WWH failure

N2A7YCVXXXXX

V1.5.1 / Oct, 2020