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Can Two SharePoint Domains Use One Microsoft 365 Tenant?

Kushani Nimanthika Sep 28, 2026 869 views

Question details

Microsoft 365 administrators are trying to determine if it is possible to configure two separate SharePoint domains within a single tenant using the same storage.

Can Two SharePoint Domains Use One Microsoft 365 Tenant?

Product: SharePoint / Microsoft 365
Device & OS: not provided
Scenario: Setting up or migrating multiple organizational domains within a single Microsoft 365 environment.
Observed behavior: Administrators need clarity on whether SharePoint allows the creation of sites under a secondary SharePoint root domain within the same tenant.

Before you start

Verify your current Microsoft 365 tenant configuration and ensure you have Global Administrator or SharePoint Administrator privileges before reviewing your domain settings.

Solution 1Recommended

Understanding SharePoint Domain Limitations

Microsoft restricts each Microsoft 365 tenant to a single top-level SharePoint root domain, meaning two domains cannot be used concurrently.

According to Microsoft 365 architecture guidelines, a SharePoint tenant can possess only one top-level SharePoint root domain (for example, company.sharepoint.com).

It is not possible to add, configure, or create sites under a secondary SharePoint domain within the exact same tenant, even if you own multiple custom domains verified in Microsoft 365.

Check current SharePoint domain

Log in to the Microsoft 365 admin center using your administrator credentials, open the navigation menu, and select 'SharePoint' to open the SharePoint admin center.

Identify your root URL

In the SharePoint admin center, navigate to 'Active sites'. Observe the URL structure of your sites; they will all share the exact same root domain ending in .sharepoint.com.

Understanding SharePoint Domain Limitations

Domain Renaming Feature: While you cannot have two concurrent SharePoint domains, Microsoft does allow administrators to rename the existing SharePoint tenant domain if your organization undergoes a rebrand.

Solution 2

Creating a Separate Tenant for a Second Domain

If your organizational structure strictly requires two distinct SharePoint root domains, you must deploy a separate Microsoft 365 tenant.

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Frequently Asked Questions

Can I change my existing SharePoint domain name instead of adding a new one?

Yes. Microsoft allows organizations to rename their SharePoint domain (e.g., from oldcompany.sharepoint.com to newcompany.sharepoint.com) using the SharePoint Online Management Shell. However, you can still only have one active domain configured at any given time.

Will adding a custom email domain change my SharePoint domain?

No. You can add multiple custom email domains (such as @company.com and @subsidiary.com) to a single Microsoft 365 tenant for Exchange Online, but this does not alter or expand the single .sharepoint.com root domain limitation for your sites.

Can I use different domains for specific SharePoint site collections?

No. All SharePoint site collections and OneDrive URLs within a single tenant will strictly inherit the top-level root domain structure (for example, domain.sharepoint.com/sites/sitename).

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