The Wifi bug in Yosemite’s current beta release is irritating. I am back on Ethernet now that Yosemite won’t let me connect to Wifi. Even when it does, it disconnects in a few minutes. Guess what - I’ve a bug fix that works.

Step 1:

Open Keychain using Spotlight (Cmd+Space).

Step 2:

Go to Keychain Access > Preferences.

Step 3:

Click “Reset My Default Keychain”.

Step 4:

Restart your Mac.

Step 5:

Turn on the Wifi and it should work and hopefully not disconnect.