I can use my work laptop to connect to my corporate VPN using wifi through my router without any difficulty. When I try to do the same via wi-fi through my TL-WPA4230P powerline wifi extender it won't let me connect. I get a good connection to the powerline extender, but it won't let me connect to the corporate VPN.

Other devices can connect to the TL-WPA4230P via wifi and browse the internet with no difficulty, so it seems to be a specific problem connecting to my corporate VPN. Any suggestions?