The OS X El Capitan 10.11.1 update improves the stability, compatibility, and security of your Mac, and is recommended for all users.
This update:
- Improves installer reliability when upgrading to OS X El Capitan.
- Improves compatibility with Microsoft Office 2016.
- Fixes an issue where outgoing server information may be missing from Mail.
- Resolves an issue that prevented display of messages and mailboxes in Mail.
- Resolves an issue that prevents certain Audio Unit plug-ins from functioning properly.
- Improves VoiceOver reliability.
- Adds over 150 new emoji characters with full Unicode 7.0 and 8.0 support.
- Resolves an issue that caused JPEG images to appear as a gray or green box in Preview.
For detailed information about the security content of this update, see Apple Security Updates.
How to update your Mac
Before updating, it's a good idea to back up up your Mac. Then use the Mac App Store to install the update.
Some updates become available only after installing other updates. Install all available updates, and allow installation to complete without interruption. You can also get this update from the Apple Support Downloads site. You might have unexpected results if third-party OS X modifications have been installed, or you modified OS X in other ways.