What should I do if I cannot get Google Apps Sync for Outlook to install?

Google Apps Sync must be installed on each person's computer, who wants to use the plug-in. You have two options for installation:

Importing: To migrate their old Outlook data to Google Apps, users also need a separate tool, Google Apps Migration for Microsoft Outlook®. Users who download Google Apps Sync version 2.1 or later from the download page get this migration tool, automatically. If you push Google Apps Sync to users via an .msi file, however, you'll need to push Google Apps Migration to them as well, or have them install the migration tool themselves. See below for details.