Before you install GSSMO, make sure that the program is not running.Make sure that you install GSSMO on the computer where you use Outlook.If you haven't already, sign in to your Google Account to accept Google's Terms and Conditions.GSSMO does not work with personal Gmail accounts. We recommend using this migration tool if you want to stop using Outlook. Installing G Suite Sync for Microsoft Outlook (GSSMO) also installs G Suite Migration for Microsoft Outlook (GSMMO), which lets you migrate your Outlook data to your new Google Account. Solution home General How do I G Suite Sync for Microsoft Outlook (GSSMO)