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System requirements

Google Workspace Sync for Microsoft Outlook

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 Microsoft Outlook. Before you begin, make sure you meet the system requirements.

System requirements

Microsoft Windows 32- and 64-bit versions of Windows Vista*, 7*, 8*, 10, and 11

Update to the latest patches for your Windows version.

Microsoft Outlook
  • Outlook 2003 SP3* or 2007 SP2* (or SP1 with hotfix)*
  • 32- and 64-bit versions of Outlook 2010*, 2013*, 2016, 2019, and 2021
  • Outlook from Microsoft 365 desktop app (not web version)

* Microsoft no longer supports these versions. Upgrade to a supported version.

What’s not supported

  • macOS
  • Windows XP and Server 2003
  • 64-bit version of Office on ARM devices
  • Outlook from Microsoft 365 (web, Android, macOS, and iOS versions) and Outlook from Microsoft Store

    Switch to a supported Windows version of Outlook.

Additional requirements

Permissions for users

To install GWSMO, users must have local administrator permissions for their computers. 

Port requirements

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

  • Outlook.exe
  • ProfileEditor.exe

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

Protocols & APIs

GWSMO uses HTTPS to connect to Google services using a proprietary GWSMO-specific Gmail sync protocol. It doesn't use IMAP or SMTP.

GWSMO uses the following APIs:

Google, Google Workspace, and related marks and logos are trademarks of Google LLC. All other company and product names are trademarks of the companies with which they are associated.

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