Microsoft 365
Tenant Migration Guide

Open the Microsoft Authenticator app

Find and open Microsoft Authenticator on your Android phone.

Tap on your company account

Tap the account showing your work email (e.g. yourname@company.com).

Tap the gear icon ⚙️ → "Remove account"

Tap ⚙️ in the top-right, then tap "Remove account".

Confirm removal

Tap "Continue" or "Remove" to confirm.

Can't find "Remove account" or account still showing?

On some Android phones, the "Remove account" button doesn't appear in Authenticator, or it does but the account remains listed after removal. This happens because the account is connected to other Microsoft apps or is set as the phone's main work account.

If your Authenticator looks like this (no remove button visible, or account is still listed after removal):

You'll need to remove the account from your phone's Settings instead:

Go to your phone's Settings and look for "Accounts & sync", "Accounts", or "Work account" (the name varies by phone brand and Android version).

Tap on "Work account" (or similar — the name may vary depending on your phone brand and Android version).

You'll see your work email accounts listed. Tap on your account.

Tap "Remove account" at the bottom.

Alternatively, you might not see individual accounts listed — instead you'll see a generic "Microsoft 365" button. If so, tap on it and then tap "Remove account". This will remove all work accounts at once.

After removing the account, reopen Authenticator and make sure the work account is no longer listed. If it's still there, remove it manually. After this, you can log back into any apps you might need (Outlook, Teams, etc.).

Open the Microsoft Authenticator app

Find and open Microsoft Authenticator on your iPhone.

Tap on your company account

Tap the account showing your work email.

Tap ⚙️ → "Remove account"

Tap ⚙️ in the top-right. Scroll down and tap "Remove account".

Confirm removal

A confirmation dialog will appear. Tap "Yes, this app only".

Can't remove the account?

On some iPhones, the account can't be removed from Authenticator because it's connected to other Microsoft apps (Outlook, Teams, etc.) on your device.

If this happens, you have two options:

Option A: Remove your work account from each Microsoft app first (Outlook, Teams, OneDrive, etc.), then go back to Authenticator and try removing the account again.

Option B: Go to your iPhone's Settings → General → VPN & Device Management (or Profiles & Device Management depending on your iOS version). Find your work account and tap "Remove Management" or "Remove Account".

After doing either option, go back to Authenticator and check that the account is gone. If it's still there, try removing it manually.

Close all Microsoft apps and disconnect old account

First, close all Microsoft apps (Outlook, Teams, Word, Excel, OneDrive, etc.).

Then press Win + i to open Settings → click Accounts → click Access work or school.

Click on your company account to expand it, then click "Disconnect".

A confirmation dialog will appear. Click "Yes".

Open Outlook and sign back in

Open Outlook. You'll be prompted to sign in. A dialog will ask you to continue or manage your account — click "Continue".

Enter your password on the login page and click "Sign in".

You'll be asked to sign in to all apps on this device. Click "Yes".

If asked to allow your organization to manage your device, click "No" (unless IT tells you otherwise).

You'll see a confirmation that your account has been added. Click "Done".

Reconnect Teams and OneDrive

Teams and OneDrive might continue working after the previous steps, but it's best to sign out and sign back in to both apps individually to make sure they're connected to the new tenant.

Teams: Click your profile icon in the top-right corner, then click "Sign out".

A confirmation dialog will appear. Click "Sign out".

Reopen Teams and sign in with your email. It will connect to the new tenant.

OneDrive: Click the OneDrive icon in the taskbar (bottom-right of your screen). Then click the gear icon ⚙️ in the top-right corner.

Click Account on the left, then click "Unlink this PC".

A confirmation dialog will appear. Click "Unlink account".

Close OneDrive entirely. Then reopen it — you'll be asked to sign in. Enter your email and click "Sign in".

When asked to set up your OneDrive folder, keep the same folder location and click "Next".

Sign out of Microsoft Edge

Even if you don't use Edge as your main browser, it's Microsoft's default browser and may be signed into the old tenant, which can cause issues. Open Edge, click your profile icon (top-right), then click "Profile settings".

In the Profiles page, click "Sign out" next to your account. Then close Edge, reopen it, and sign back in with your email.

Re-register MFA on Authenticator

During sign-in you'll be prompted to set up MFA. Open Microsoft Authenticator on your phone and follow the instructions to add your work account back.

Sign out of Teams

Open Teams. Click your profile picture in the top-right corner, then click "Sign out".

Remove account from Outlook

Open Outlook. In the menu bar, click Outlook → Settings (or press ⌘ ,).

In the Settings window, click Accounts (already selected). Then click Manage at the bottom and select "Remove Account".

Sign out of other Office apps (Word, Excel, PowerPoint)

For each Office app, click the app name in the menu bar (e.g. Excel) → click "Sign Out...".

Unlink OneDrive

Click the OneDrive icon in the menu bar (top of your screen).

Click the three dots (⋯) at the bottom, then click "Preferences".

Go to the Account tab and click "Unlink this Mac".

Sign back in and re-register MFA

Open Outlook and sign in with your same email address — you'll be directed to the new tenant. Do the same for Teams and OneDrive.

During sign-in you'll be prompted to set up MFA. Open Microsoft Authenticator on your phone and follow the instructions to add your work account back.

Remove and re-add your account in Outlook

Open Outlook → profile icon → ⚙️ → under "General", tap "Accounts" → tap your work email → "Delete Account".

Then tap "Add Account" and sign in.

If that didn't work: Clear Outlook cache

Go to your phone's Settings → Apps → Outlook, then clear the cache and data:

Open Outlook again and sign in. It should now connect to the new tenant.

Still not working? Uninstall and reinstall

Long-press Outlook → Uninstall. Reinstall from Google Play Store and sign in fresh.

Repeat for Microsoft Teams

First: Sign out → sign back in. If that fails: Clear cache/data. Last resort: Uninstall and reinstall.

Set up MFA on Authenticator

When prompted during sign-in, open Microsoft Authenticator and add your work account back.

Remove and re-add your account in Outlook

Open Outlook → profile icon → ⚙️ → under "General", tap "Accounts" → tap your work email → "Delete Account".

Then tap "Add Account" and sign in.

If that didn't work: Offload Outlook

Go to Settings → General → iPhone Storage → Outlook → "Offload App". Then tap "Reinstall App" and sign in.

Still not working? Delete and reinstall

Long-press Outlook → "Remove App" → "Delete App". Reinstall from App Store and sign in fresh.

Repeat for Microsoft Teams

First: Sign out → sign back in. If that fails: Offload app. Last resort: Delete and reinstall.

Set up MFA on Authenticator

When prompted during sign-in, open Microsoft Authenticator and add your work account back.