By default, Microsoft Office 2010 products deployed via Click-to-Run are kept up to date automatically.
Below is a listing of the security and critical updates that went into each release. Each user's machine will apply the updates that are applicable to their Office product. If your version of Office does not contain an application, you will not receive updates to that application.
Each release has a new version number. Users can find their current version by following these steps:
Open any Office application
Click on the File tab
Click on Help
The Click-to-Run version is displayed in the Click-to-Run Product Updates section.