This article is for administrators setting up GWSMO. To begin using GWSMO, go to GWSMO User Help.
If you have the legacy free edition of G Suite, upgrade to Google Workspace to get this feature.
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.
Before you begin installation and setup, make sure you meet the system requirements.
Operating system requirements
We recommend that you update to the latest patches for your Microsoft Windows version.
- Windows Vista (32 and 64 bit)
Note: Microsoft no longer supports Windows Vista. We recommend you upgrade to a supported version of Windows.
- Windows 7 (32 and 64 bit)
- Windows 8 (32 and 64 bit)
- Windows 10 (32 and 64 bit)
|Unsupported operating systems||Notes|
|macOS||Microsoft Outlook for Mac doesn't support the Messaging Application Programming Interface (MAPI), which is required to communicate with Outlook.
To move data from Apple to Google Workspace, see Migrate data from Apple to Google Workspace.
Windows Server 2003
|Microsoft no longer supports these versions. Support for them in our data migration and sync products stopped on December 31, 2018.|
- Outlook 2003 SP or 2007 SP2 (or SP1 with hotfix)
Note: Microsoft no longer supports Outlook 2003 and 2007. We recommend that you upgrade to a supported version of Outlook.
- Outlook 2010 (32 and 64 bit)
- Outlook 2013 (32 and 64 bit)
- Outlook 2016 (32 and 64 bit)
- Outlook 2019 (32 and 64 bit)
|Unsupported Outlook versions||Notes|
|Outlook from Microsoft 365 (web, Android, Mac, and iOS versions)||Switch to a supported computer version of Outlook.|
|Windows 10 ARM-based PCs—32 (ARM32) and 64 bit (ARM64)|
Permissions for users
To install GWSMO, users must have local administrator permissions for their machines. If you need help, contact your admin.
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:
GWSMO doesn't use IMAP or SMTP.
Set up & install GWSMOStep 1: Set up GWSMO in the Google Admin console
Before you or anyone else in your organization can use GWSMO, you must turn on the following features in your Google Admin console:
- Sign in to the Google Admin console.
- Turn on GWSMO for your account:
- From the dashboard, click AppsGoogle WorkspaceGmailEnd User Access.
- Click Google Workspace Synccheck the Enable Google Workspace Sync for Microsoft Outlook for my users box.
- Click Save.
- Turn on the Google Calendar service (so users can create profiles). For details, go to Turn Calendar on or off for users.
- Turn on contact sharing for your organization (so users' Global Address Lists are dynamically updated):
- From the Admin console Home page, go to Menu DirectoryDirectory settings.
- Click Sharing settingsContact sharing.
- Check the Enable contact sharing box.
- Click Save.
- Turn on the Drive service and Drive apps (required to synchronize notes to Drive):
- To turn on Drive, go to Turn Drive on or off for users.
- To allow users to install Drive apps, click AppsGoogle WorkspaceDrive and DocsFeatures and Applications.
- Click Drive SDKcheck the Allow users to access Google Drive with the Drive SDK API box.
- Click Save.
Users in your organization who want to sync their data between Google Workspace and Outlook must have GWSMO installed on their client machine. There are 2 options for installation.
Option 1: Push an MSI file to your users
To do this, download the MSI file from the GWSMO download page. Be sure to pick the correct edition (32 bit or 64 bit) for your users' version of Outlook.
You can then push the MSI file to your users with the software you use to deploy and secure your organization's applications.
Your users can then follow these instructions to install the file.
Option 2: Let your users download and install GWSMO themselves
Your users can download the EXE file from the GWSMO download page.
They can then follow these instructions to install the file.
The default location on each client machine is C:\Program Files\Google\Google Apps Sync.
If you have any issues installing GWSMO, go to Troubleshoot installation issues.
Before you migrate data, you need to decide if smart features in Gmail and Google Chat and Meet as well as personalization features in other Google products can use data from Gmail, Chat, and Meet. For certain features to work, such as autosorting in Gmail, smart features and personalization must be turned on in the target account before you migrate data.
Learn more about turning on smart features and personalization.
If you're using GWSMO in a mixed Google Workspace and Exchange environment, and you want to query availability information for Exchange users, you need to:
- Install and set up Google Calendar Connector Web Service. For instructions, go to Google Calendar Connector Web Service Installation and Configuration Guide.
Important: When you set up the web service, make sure you do not set up the Google Calendar Connector Sync Service.
- Create the following registry key and accompanying string value on each client machine where GWSMO is installed. If you're running a 32-bit version of Outlook on a 64-bit version of Windows, create this registry key in the correct location for 32-bit applications. For details, consult these instructions on using the Windows registry at Configure options through the registry.
- Registry key— HKEY_CURRENT_USER\Software\Google\Google Apps Sync\CalendarSync
- String value—Value name: FreeBusyURL; Value data: <URL for the Calendar connector>
http://www.example.com/GCalExchangeLookup/ExchangeQuerier.aspx (where you replace example.com with the name of your company's server)
Note: Google Support cannot assist with troubleshooting your Google Calendar Connector Web Service installation.
Import dataIntegration with Google Workspace Migration for Microsoft Outlook
With GWSMO, your users can import data from an Exchange account or Outlook PST file. To do this, GWSMO uses a separate migration product, Google Workspace Migration for Microsoft Outlook (GWMMO). GWSMO launches the GWMMO migration product automatically and, in most cases, users won't even notice they're using a separate product.
GWSMO launches the migration product when the user:
- Imports data when they recreate or make another user profile. For details, go to Recreate or replace your profile.
- Imports data after they create their profile. For details, go to Import your Outlook data later.
GWMMO as a standalone migration product
Users can launch GWMMO as a standalone application. In the Start menu, click Google Workspace MigrationGoogle Workspace Migration for Microsoft Outlook.
However, GWMMO doesn't import Outlook notes, tasks, or journal entries. To import this data, users should run GWSMO.
The GWMMO migration product must be installed on each client machine.
Users who download and install GWSMO themselves (Option 2 above) automatically install GWMMO migration product.
If you push GWSMO to users via an MSI file (Option 1 above), you’ll also need to push the GWMMO migration product to them as well. Or, have them install GWMMO themselves. For details, go to Install GWMMO.
Users can sync email, contacts, calendar events, and Outlook notes, which are then available in Outlook and the Google Workspace web interface.
Outlook tasks sync to Google Workspace but only after GWSMO starts. (Email, contacts, and calendar events sync while importing.)
Outlook journal entries are not synchronized to Google Workspace, but users can import them from their Outlook profile during the initial sync.
For details, go to What's synchronized between Outlook and Google Workspace?
Contact Google Workspace support for help with GWSMO and GWMMO. If you have Outlook or Windows questions, consult your Microsoft documentation.
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