OS X Yosemite 10.10.1 Update
The OS X Yosemite 10.10.1 update is recommended for all Yosemite users. It improves the stability and compatibility of your Mac.
- Improves Wi-Fi reliability
- Improves reliability when connecting to a Microsoft Exchange server
- Improves reliability sending Mail messages when using certain email service providers
- Improves reliability when connecting to remote computers using Back to My Mac
For more detailed information about this update, please visit: http://support.apple.com/kb/HT6572