Patch your AP or clients, as WPA2 can be compromised now. https://www.reddit.com/r/networking/comments/76o6r7/psa_krack_attacks_wpa2/
Update: Microsoft already patched this vulnerability on all supported versions of Windows (Win7 forward). However, the vulnerability still exists, and you should still patch your WiFi firmware and/or APs. https://www.computerworld.com/artic...ts-down-krack-with-sneaky-windows-update.html