T440 wifi not working after Windows 10 upgrade

That's all. Any clue?Thank you.

I googled and it seem that the issue is related to the Cisco VPN:https://forums.lenovo.com/t5/Lenovo-Edge-Yoga-LaVie-Z-Flex/Windows-10-Upgrade-No-connections-are-available/td-p/2130314/page/2 

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