Best Method to Migrate Google Workspace to Microsoft 365 (2026 Guide)

Summary: Google Workspace and Microsoft 365 are two leading cloud productivity platforms, but they do not offer a built-in migration path between them. As a result, organizations must manually transfer Email, attachments, labels, contacts, calendar, tasks, PST, PDF, MBOX, CSV, Skip migration, social, and forums.

While Microsoft provides native migration options, configuring them correctly can be challenging. IT administrators often encounter permission issues, API configuration errors, incomplete mailbox synchronization, and broken folder structures during the process.

This guide explains two ways to migrate Google Workspace to Microsoft 365:

• The manual migration method using Microsoft's native tools.
• An automated migration solution using the Cigati Google Workspace Backup Tool for faster, more reliable, and large-scale migrations.

Pre-Migration Checklist

Before starting the migration, ensure the following prerequisites are completed:

• Verify your Microsoft 365 domain ownership.
• Create all user accounts in Microsoft 365.
• Assign Exchange Online licenses to every user.
• Confirm Azure AD synchronization is working correctly.
• Enable the required Google Workspace APIs.
• Configure a Google Workspace service account with domain-wide delegation.
• Define the migration scope, including users and data types.
• Verify sufficient Microsoft 365 mailbox storage.
• Ensure administrator access is available in both environments.
• Inform users about the migration schedule and expected downtime.

Completing these steps beforehand helps minimize migration failures and reduces troubleshooting during the process.

How to Migrate Google Workspace to Microsoft 365 Manually

Microsoft supports native migration from Google Workspace to Exchange Online. Although effective, the process requires careful configuration and multiple administrative steps.

Part 1: Verify Your Domain and Create User Accounts

1. Sign in to the Microsoft 365 Admin Center.
2. Navigate to Setup > Domains.
3. Add your Google Workspace domain.
4. Create the required TXT record provided by Microsoft.
5. Verify domain ownership after DNS propagation.
6. Go to Users > Active Users.
7. Create or bulk-import all Google Workspace users.
8. Assign an Exchange Online license to each account.

Part 2: Configure Google Workspace Access

Next, configure Google Workspace to allow Microsoft access to mailbox data.

1. Log in to the Google Cloud Console as a Super Administrator.
2. Open your Google Cloud project.
3. Enable the required APIs, including Gmail, Contacts, Calendar, and Drive.
4. Create a Service Account.
5. Enable Domain-Wide Delegation.
6. Copy the Client ID.
7. Open the Google Admin Console.
8. Add the Client ID and required OAuth scopes.
9. Wait until Google confirms the permissions are active.

Part 3: Create the Migration Batch

Once both environments are configured, create the migration project.

1. Open the Exchange Admin Center (EAC).
2. Navigate to Migration.
3. Select Add Migration Endpoint.
4. Choose Google Workspace.
5. Upload the generated JSON or P12 authentication key.
6. Complete the endpoint configuration.
7. Create a CSV file containing all user email addresses.
8. Select Create Migration Batch.
9. Choose Migration to Exchange Online.
10. Upload the CSV file.
11. Configure migration settings and filters.
12. Save the batch.
13. Start the migration.
14. Monitor progress through the Migration Dashboard.
15. After completion, update your MX records to Microsoft 365.
16. Remove the migration batch after verification.

Once DNS propagation completes, mail flow begins through Microsoft 365.

Limitations of the Manual Migration Method

Although Microsoft's migration process is free, it requires significant preparation and ongoing monitoring.

Some common challenges include:

• Multiple administrative configurations before migration can begin.
• Complex Google API and service account setup.
• CSV formatting errors can cause migration failures.
• Mailboxes migrate at different speeds.
• Post-migration verification requires additional effort.
• Large migrations become difficult to monitor and manage.
• Troubleshooting often requires advanced Microsoft 365 and Google Workspace knowledge.

For organizations with many users, the manual approach can become time-consuming and resource-intensive.

Automated Method to Migrate Google Workspace to Microsoft 365

For organizations seeking a simpler and more efficient migration process, an automated solution can significantly reduce manual effort.

The Cigati Google Workspace Backup Tool enables administrators to migrate Google Workspace data directly to Microsoft 365 with minimal configuration.

The software supports migration of:

• Gmail emails
• Contacts
• Calendars
• Google Drive data
• Multiple user accounts simultaneously

It also preserves mailbox hierarchy, email properties, attachments, and folder structures throughout the migration process.

Steps to Migrate Google Workspace to Microsoft 365 Using the Tool

1. Download and install the Cigati Google Workspace Backup Tool.
2. Launch the software with administrator privileges.
3. Sign in using: Service Account ID, User Name, and P12 or JSON authentication file.
4. Select the Google Workspace mailboxes to migrate.
5. Choose the Google Workspace services you want to transfer.
6. Apply optional filters for selective migration.
7. Sign in to your Microsoft 365 account using either:
   ○        Single User Authentication
   ○        Administrator Authentication
8. Click Start Migration to begin transferring data.

The software monitors the migration automatically while preserving data integrity.

Why Choose an Automated Migration Tool?

Compared to the manual approach, automated migration software offers several advantages:

• Direct migration from Google Workspace to Microsoft 365.
• Preserves email attachments and metadata.
• Maintains original folder hierarchy and mailbox structure.
• Supports bulk migration of multiple user accounts.
• Transfers emails, contacts, calendars, and Drive data from a single interface.
• Provides filtering options for selective migration.
• Reduces manual configuration and troubleshooting.
• Minimizes migration time and administrative workload.
• Can export Google Workspace mailboxes to PST for Outlook if required.

These features make automated migration particularly suitable for medium and large organizations.

Conclusion

Migrating from Google Workspace to Microsoft 365 requires careful planning regardless of the method you choose. Microsoft's native migration tools provide a reliable option for smaller environments but involve extensive configuration, API setup, and ongoing monitoring. For organizations looking to simplify the process, the Cigati Google Workspace Backup Tool offers a streamlined migration experience. It securely transfers emails, contacts, calendars, and Google Drive data while preserving mailbox structure and minimizing administrative effort. Choosing the right migration method depends on your organization's size, technical expertise, and migration requirements.

Frequently Asked Questions

Q1. Can I migrate multiple Google Workspace accounts at once?

Yes. The Cigati Google Workspace Backup Tool supports bulk migration, allowing administrators to migrate multiple user accounts simultaneously and manage large-scale projects more efficiently.

Q2. What data can be migrated from Google Workspace to Microsoft 365?

The software supports migration of Gmail emails, contacts, calendars, and Google Drive data, enabling organizations to transfer essential business information within a single migration project.

Q3. Can Gmail emails be migrated directly to Microsoft 365?

Yes. The software provides direct migration from Google Workspace mailboxes to Microsoft 365 without requiring users to export mailbox data beforehand.

Q4. How can I minimize downtime during migration?

Plan the migration carefully, validate user accounts in advance, complete mailbox synchronization before the final cutover, and update DNS records only after verifying successful data migration.

Q5. Will mailbox folders and labels remain intact?

Yes. The migration tool preserves the original mailbox hierarchy, helping users access their emails in familiar folders after migration.

Q6. Can Google Drive data be migrated?

Yes. In addition to mailbox data, the software supports migration of Google Drive files and folders to Microsoft 365.

Q7. Can I migrate only selected users?

Yes. Administrators can migrate specific users or departments, making phased migrations and pilot deployments easier to manage.

Q8. Are email attachments and metadata preserved?

Yes. The migration process retains email attachments along with metadata such as sender information, recipients, timestamps, subject lines, and folder structure.

Q9. Can Google Workspace Groups be migrated to Microsoft 365 Groups?

Mailbox and user data migration are supported. However, Microsoft 365 Groups have different configurations, so group migration should be planned separately according to your organization's requirements.