Mac OS Lion has caused my Mac to no longer automatically connect to WiFi. If I boot it into windows it works fine.

It does not make sense. I have reset everything. Was working fine before the upgrade. Even tried removing and adding my network connection. I have also upgraded to 7.1. If it is disconnected from my router due to sleep for more than 5 minutes it cannot reconnect automatically.

Settings > General > Reset > Reset Network Connections
Try again.

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