Having Yosemite Wi-Fi problems? Here's a possible fix!

No sooner was OS X Yosemite released in October before Mac users started to complain of Wi-Fi problems with the new release. OS X 10.10.1 is currently in development and testing, but until then, what are you to do with Wi-Fi that isn't working right? Here's one possible fix until Apple works out the problems.

Many users aren't having any Wi-Fi problems with Yosemite, but some are. And the problems are maddening. Wi-Fi connections drop, or spontaneously stop working. Word of one interim fix comes from reader Evan H. Katz, who recently talked with Apple's own tech support about the problems he's been having with Wi-Fi. The solution comes from modifying the Network system preferences.

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To help stabilize Wi-Fi on Yosemite

  1. Click on the menu.
  2. Select System Preferences...
  3. Click on Network.
  4. Click the Advanced... button.
  5. Click the checkbox next to Change networks.
  6. Click the OK button.
  7. Click the Apply button.
  8. Close the Network system preference.

System preferences

Network settings

Advanced network settings

Change networks

By changing this option, your Mac won't slip onto another Wi-Fi network without you typing in your administrative password to make the change.

Katz said that Apple support suggested that if the problem doesn't get any better, to try renewing the DHCP lease.

To renew your Mac's DHCP lease

  1. Open the Network system preference again.
  2. Click the Advanced button.
  3. Click the TCP/IP tab.
  4. Click the button marked Renew DHCP Lease.
  5. Click the OK button.
  6. Close the Network system preference.

Most of us will need to be patient for Apple to get its act together for 10.10.1, but I hope this gives some of you some improved reliability for Wi-Fi until then. If you have any questions, let me know in the comments.