The clock is ticking on support for Office for the Mac 2011, and there's no sign from Microsoft of a replacement. According to the Redmond, Wash. company's lifecycle policy, Office for the Mac 2011 will fall off support on Jan. 12, 2016, or slightly more than 18 months from now. Although Microsoft supports the Windows suite for 10 years, it provides fixes and security patches for the Mac edition for only five.