Alongside iOS 8.4 and Apple Music, Apple has also released OS X Yosemite 10.10.4 with significant bug fixes and improvements. The update is recommended for all OS X Yosemite users to install.
The most important change in OS X 10.10.4 is the removal of the “discoveryd” networking process and replaced with “mDNSResponder” which aims to improve the performance, reliability and stability of networking components in OS X for Wi-Fi and local networking.
OS X 10.10.4 also includes updates and bug fixes for Photos app, Mail and iCloud Photo Library. Check out a full release notes below…
The OS X Yosemite v10.10.4 update improves the stability, compatibility, and security of your Mac.
• Improves networking reliability
• Improves Migration Assistant reliability
• Addresses an issue that prevented some external displays from functioning properly
• Improves the reliability of upgrading iPhoto and Aperture libraries to Photos
• Improves reliability when syncing photos and videos to iCloud Photo Library
• Addresses an issue that could cause Photos to unexpectedly quit after importing some Lecia DNG files
• Resolves an issue that could delay outgoing email messages in Mail
For enterprise customers, this update:
• Addresses an issue where OS X systems bound to directory services could stop responding under certain conditions
• Adds the ability to create mobile accounts with the createmobileaccount tool
• Fixes an issue in Profile Manager that could allow a user to install pre-release software even when the setting is disabled
OS X 10.10.4 is available for download right now, for free, via the Updates tab in the Mac App Store…