Go to Network in your System Preferences. Click the WiFi icon and then "Advanced":
Delete any wifi networks no longer used (even delete your home network if it's listed) and then select the plus key to add your network anew. Be sure and check the "Remember networks..."
You should be fine now...
Hello, Clinton. I did try this in the past few days and did it again today. To no avail. Still same. It does connect but only when prompted. It will not automatically join. I have updated to the latest software in case there is a bug but not sure what to do now.
I power cycled my airport extreme but no change. Re-started my computer. Deleted home network and re entered it.
It's got me stumped!