Administrator setup for GWSMO

Google Workspace Sync for Microsoft Outlook

This article is for administrators setting up GWSMO. To begin using GWSMO, go to GWSMO User Help.

You can set up Google Workspace Sync for Microsoft Outlook (GWSMO) for users in your organization so they can synchronize their email, calendar, and contact data between Google Workspace and Outlook.

System requirements

Minimum system requirements

For Microsoft Windows: 

We recommend that you update to the latest patches for your Windows version. 

For Outlook:

What’s not supported

Permissions for users

To install GWSMO, users must have local administrator permissions for their machines. If you need help, contact your admin.

Port requirements

Open port 443 for the following applications on each client machine:

For details on GWSMO ports, go to Open network ports.


GWSMO uses HTTPS to connect to Google services using a proprietary GWSMO-specific Gmail sync protocol. It also uses the following APIs: