When you are connected with VPN to your work network, some dns names are resolving to the wrong number. This is because you are using the wrong preferred dns.

When typing nslookup, you see that the used DNS server is the dns server from your networkcard and not the VPN dns server.

Look with ipconfig /all” for the name of your vpn network interface, then go to the following key in the register:

HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP\LINKAGE\BIND

Make sure the name of your network interface is on top of the bind sequence. This should set your preferred DNS to your VPN DNS server.