Event viewer deauthentication error troubleshooting and information.
Information on event viewer warning: 6105 - deauth after EAPOL key exchange sequence.
To correct this, try updating to the latest Wi-Fi driver.
In most cases it's normal to see deauthentication after EAP over LAN key exchange warnings, as the adapter attempts to roam or renews it's authentication. This is only a problem if these are frequent, or if your system is entirely unable to authenticate, which leads to a disconnection.