You work with multiple Microsoft 365 tenants and need to switch between them without signing out and back in each time. The Copilot tenant switcher is a built-in feature that lets you change the active tenant directly from the Copilot interface. This article explains how the tenant switcher works and provides step-by-step instructions for using it in Copilot for Microsoft 365.
The tenant switcher is available in Copilot experiences across Microsoft 365 apps including Teams, Word, and the Copilot pane in Edge. It relies on the Microsoft Entra ID multi-tenant authentication model to maintain separate sessions for each tenant. You do not need to install any additional software or browser extensions.
This guide covers the prerequisites for using the tenant switcher, the exact steps to switch tenants in different apps, and what to do if the switcher does not appear. You will also learn about limitations such as data isolation between tenants and how guest access affects the switching experience.
Key Takeaways: Switching Tenants in Copilot
- Copilot tenant switcher icon: Located in the Copilot pane header in Teams, Word, and Edge. Click it to see a list of signed-in tenants.
- Microsoft 365 admin center > Org settings > Copilot > Multi-tenant collaboration: Must be enabled for the tenant switcher to work across tenants in your organization.
- Ctrl + Shift + T: Keyboard shortcut to open the tenant switcher directly in the Copilot pane in supported apps like Teams and Word.
Understanding the Copilot Tenant Switcher
The Copilot tenant switcher is a feature built into Copilot for Microsoft 365 that allows you to change the active tenant context without signing out of your current session. It uses Microsoft Entra ID multi-tenant authentication to maintain separate token caches for each tenant you have signed into. When you switch tenants, Copilot reloads its data sources and grounding context from the new tenant. This means Copilot will use the Microsoft Graph data, SharePoint sites, and OneDrive files from the selected tenant for all prompts and responses.
The tenant switcher works only with Copilot for Microsoft 365 licenses. It does not apply to Copilot Pro or the free Copilot experience. Each user must have a valid Copilot for Microsoft 365 license assigned in each tenant they want to access. The feature is supported in the following apps: Microsoft Teams desktop and web, Microsoft Word desktop and web, Microsoft PowerPoint desktop and web, Microsoft Excel desktop and web, and the Copilot pane in Microsoft Edge. In Outlook, tenant switching is handled separately through the account switcher in the Outlook settings.
Prerequisites for Using the Tenant Switcher
Before you can use the tenant switcher, the following conditions must be met:
- You have a Copilot for Microsoft 365 license assigned in each tenant you plan to switch between.
- Your Microsoft 365 admin has enabled multi-tenant collaboration in the admin center under Org settings > Copilot > Multi-tenant collaboration.
- You are signed into each tenant in the same browser profile or Windows session using separate Microsoft Entra ID accounts.
- Your tenant does not have conditional access policies that block cross-tenant authentication.
Steps to Switch Tenants in Copilot
The steps differ slightly depending on the app you are using. Below are the instructions for the most common scenarios.
Switching Tenants in Microsoft Teams
- Open the Copilot pane
In Microsoft Teams, click the Copilot icon in the left navigation bar. The Copilot pane opens on the right side of the window. - Locate the tenant switcher icon
At the top of the Copilot pane, look for the current tenant name or a globe icon. Click this icon to open the tenant list. - Select the target tenant
From the dropdown list, choose the tenant you want to switch to. If you do not see the tenant, click Add account and sign in with your credentials for that tenant. - Confirm the switch
Copilot will reload with the new tenant context. The tenant name at the top of the pane updates to reflect the change. You can now ask questions and perform actions using data from the new tenant.
Switching Tenants in Microsoft Word
- Open the Copilot pane
In Word, click the Copilot icon on the Home tab. The Copilot pane opens on the right. - Click the tenant switcher icon
At the top of the Copilot pane, click the current tenant name or the globe icon. A list of signed-in tenants appears. - Choose the new tenant
Click the tenant you want to use. If the tenant is not listed, select Add another account and sign in. - Wait for context reload
Copilot will refresh and load data from the selected tenant. This may take a few seconds.
Switching Tenants in Microsoft Edge
- Open the Copilot sidebar
In Edge, click the Copilot icon in the top-right toolbar. The sidebar opens on the right. - Access the tenant switcher
Click the profile icon or the current tenant name at the top of the sidebar. A dropdown menu shows all tenants you are signed into. - Select the tenant
Click the tenant you want to switch to. If it is missing, click Sign in and enter your credentials for that tenant. - Verify the switch
The tenant name updates at the top of the sidebar. You can now use Copilot with data from the new tenant.
Common Issues and Limitations
The tenant switcher icon does not appear
If you do not see the tenant switcher icon in the Copilot pane, first verify that you have a Copilot for Microsoft 365 license assigned in the current tenant. Open the Microsoft 365 admin center, go to Users > Active users, and check the license assignment. If the license is missing, contact your admin to assign it. Also confirm that multi-tenant collaboration is enabled in the admin center under Org settings > Copilot > Multi-tenant collaboration. If the setting is off, the tenant switcher will not appear.
Copilot uses data from the wrong tenant after switching
This can happen if the tenant switch did not complete fully. Close the Copilot pane and reopen it. Then switch tenants again using the steps above. If the issue persists, sign out of all tenants in the app, close the app, and sign back in. Start with the tenant you want to use as the primary tenant, then add the secondary tenant. This ensures the token cache is rebuilt correctly.
Cannot add a tenant that requires multi-factor authentication
The tenant switcher supports multi-factor authentication MFA. When you click Add account and enter your credentials, you will be prompted to complete MFA if the tenant requires it. Complete the MFA challenge in the browser window that opens. After authentication, the tenant appears in the switcher list.
Copilot Tenant Switcher vs Manual Account Switching
| Item | Copilot Tenant Switcher | Manual Account Switching |
|---|---|---|
| Description | Built-in feature in Copilot pane to change tenant context | Signing out of one account and signing into another |
| Time required | 2-5 seconds | 30-60 seconds |
| Data persistence | Maintains separate token caches for each tenant | Clears all tokens and cache on sign out |
| Supported apps | Teams, Word, PowerPoint, Excel, Edge | All Microsoft 365 apps |
| Guest access support | Works only with full member accounts, not guests | Works with guest accounts |
| License requirement | Copilot for Microsoft 365 in each tenant | Copilot for Microsoft 365 only in the active tenant |
You can now switch between multiple tenants in Copilot without signing out and back in. Use the tenant switcher icon in the Copilot pane in Teams, Word, or Edge to change contexts quickly. For faster access, use the Ctrl + Shift + T keyboard shortcut in Teams and Word to open the switcher directly. If you work with guest accounts, manual switching remains the only option as the tenant switcher does not support guest access.