This article originally appeared in TidBITS on 2015-06-30 at 11:00 a.m.
The permanent URL for this article is: http://tidbits.com/article/15763
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Apple Improves Networking in OS X 10.10.4

by Josh Centers

If you’ve been plagued by networking problems since updating to OS X 10.10 Yosemite, your salvation may be at hand with the OS X 10.10.4 update [1], which ditches the unreliable discoveryd service for the trusty old mDNSResponder. In plain English, that should mean the return of stable networking in OS X (see “Apple’s Networking Kerfuffle [2],” 7 May 2015).

You can install 10.10.4 via Software Update, or from Apple Software Downloads as delta [3] (1.09 GB) and combo [4] (2.02 GB) installers. As always, it’s smart to wait a few days to see if any major issues crop up, but if you’ve been nagged by networking problems, an immediate upgrade may be advisable. Be sure to back up first!

In the world of Photos, we’re hoping OS X 10.10.4 addresses the sync issues brought up by Adam Engst in “How to Throttle iCloud Photo Library Uploads [5]” (20 May 2015) and “More Problems with iCloud Photo Library Uploads [6]” (19 June 2015). Apple mentions fixes like “improves reliability when syncing photos and videos to iCloud Photo Library,” and “improves the reliability of upgrading iPhoto and Aperture libraries to Photos.” Also, 10.10.4 fixes an issue that could cause Photos to crash after importing some Leica DNG files.

Additionally, OS X 10.10.4 improves the reliability of Migration Assistant and addresses an issue that prevented some external displays from functioning properly. There are also fixes for delayed outgoing messages in Mail and an issue that allowed Web sites to prevent users from navigating away in Safari by presenting repeating JavaScript alerts.

For enterprise customers, OS X 10.10.4 has a fix for an issue where Macs bound to directory services could stop responding under certain conditions. Also, the update grants the capability to create mobile accounts with the createmobileaccount command-line tool and fixes an issue in Profile Manager that could allow users to install pre-release software even when the setting was disabled.

As always, OS X 10.10.4 also includes numerous security fixes [7].

[1]: https://support.apple.com/en-us/HT204928
[2]: http://tidbits.com/article/15649
[3]: https://support.apple.com/kb/DL1819
[4]: https://support.apple.com/kb/DL1820
[5]: http://tidbits.com/article/15679
[6]: http://tidbits.com/article/15745
[7]: https://support.apple.com/en-us/HT204942