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Mac OS X Yosemite Wireless Problems

Read about problems you might have with your wireless connection and Mac OS X Yosemite.

In the last few days, we and many other similar organizations have seen a number of wireless and VPN complaints about repeated loss of connectivity or complete shut down of wireless from Macintosh owners who have converted to Yosemite (OS X 10.10).  

The strong evidence is that these problems are caused by changes that Apple has made in the networking and wireless components of OS X in Yosemite. Although Apple has made no direct statement about the problems, they have begun to make pre-releases of the next version of Yosemite with notes that suggest that they are fixing wireless problems with the original release. Our tests of the preliminary versions of this release suggest that they do eliminate the problems that have been complained about.

Yosemite 10.10.1 appears to fix some, but not all, of the problems experienced by wireless users. They are still not all repaired in 10.10.3. ACT is continuing to test versions of Mac OS X and there are indications that the upcoming 10.10.4 will be better. Please stay tuned to hear more about when upgrades can be recommended.

We suggest that those who have not yet converted to Yosemite hold off, if possible, until all problems have been addressed.  

For those who have converted and are having significant trouble, some workarounds may help:

  • We've found that use of the Apple built in VPN system aggravates the problem because it is particular sensitive to wireless behavior. If use of the VPN is critical, the latest AnyConnect VPN software from Blink is somewhat less sensitive to changes in the underlying networking and seems to work better.
  • Some people report improvements by turning off Bluetooth on the Mac.
  • It may help to move somewhat closer to a wireless access point, particularly in situations where there are multiple access points approximately the same distance away, because the problems apparently have to do with attempts by the Mac to find 'better' wireless connectivity when multiple access points are available.