If that doesn't work, or if you don't trust AutoUpdate to do the right thing, you can download the latest updater and install it yourself. That'll download to your Downloads folder as a.pkg file. How to run the AutoUpdate installer • Double-click on 'Microsoft AutoUpdate 3.0.6.pkg' to launch the installer. • Click Continue. • Click Continue again to install it to your Mac's hard drive.
If an update is available for your version of Office, you'll see a link to a website with more information about the update. Early access with Office Insider You can join the Office Insider for Mac program to get early access to the newest Office innovations. In the Office 2011 SP1 Update (14.1.0) volume window, double-click the Office 2011 SP1 Update (14.1.0) application to start the update process, and then follow the instructions on the screen. If the installation finishes successfully, you can remove the update installer from your hard disk.
• Click Install. • Enter your administrator password and click Install Software. • After it's done click the Close button.