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Office Installation Errors

Fix Google Workspace Sync for Outlook Installation Errors on Windows 11

Natalie TaylorNatalie Taylor Sep 28, 2026 869 views

Question details

The user needs to resolve a Windows Installer package error that prevents the installation of Google Workspace Sync for Microsoft Outlook (GWSMO) after upgrading Windows 11.

Fix Google Workspace Sync for Outlook Installation Errors on Windows 11
Product
Google Workspace Sync for Microsoft Outlook
Device & OS
Windows 11
Scenario
Attempting to install or reinstall Google Workspace Sync for Outlook after a recent Windows 11 upgrade (such as version 24H2).
Observed behavior
The GWSMO installation crashes or fails with a Windows Installer package error, often caused by conflicting Google Update components or OS compatibility issues.
Before you start

Ensure you have administrative privileges on your Windows 11 computer to modify program files and registry keys, and create a system restore point before making any changes.

Solution 1Recommended

Uninstall Chrome and Clear Google Directories

Removing existing Google components clears the conflicting Google Update service, allowing the GWSMO installer to run successfully.

This method resolves conflicting background services by completely wiping out old Google registry keys and update folders before attempting to install GWSMO again.

1
Uninstall Google Chrome

Open the Windows Control Panel, navigate to Programs and Features, locate Google Chrome, and uninstall it.

2
Delete the Google Program Folder

Open File Explorer (Win + E), navigate to C:\Program Files (x86)\, and permanently delete the folder named 'Google'.

3
Remove Google Registry Keys

Press Win + R, type 'regedit', and press Enter. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\ and delete the 'Google' key.

4
Run the GWSMO Installer

Locate your downloaded gsync.msi file and double-click it to successfully install Google Workspace Sync for Microsoft Outlook.

5
Reinstall Google Chrome

Once the sync tool is installed, download the latest version of Google Chrome from the official website and reinstall it.

Uninstall Chrome and Clear Google Directories
Registry Warning: Be very careful when editing the Windows Registry. Only delete the specific Google folder mentioned to avoid system instability.
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Frequently Asked Questions

Why does GWSMO fail to install on Windows 11 24H2?

Google Workspace Sync has known compatibility issues with certain major Windows 11 upgrades, specifically version 24H2. These updates can disrupt the Google Update service or conflict with the Windows Installer, leading to installation failures.

Can I use Google Workspace Sync without uninstalling Chrome?

If the installation fails due to a Google Update service conflict, temporarily uninstalling Chrome and wiping the Google software directories is the most reliable workaround. You can safely reinstall Chrome immediately after GWSMO installs.

Where can I safely download the gsync.msi file?

The GWSMO installer (gsync.msi) should only be downloaded directly from the official Google Workspace administrator download page to ensure you have the latest, secure version.