Unsyncing my personal account with TTU.

Remove the TTU account separately from OneDrive, Outlook, and the Office sign-in session on your MacBook Air, because signing out of Office does not unlink OneDrive or remove an Outlook mailbox.

1. Unlink the TTU OneDrive account

1. Select the OneDrive cloud icon in the macOS menu bar.
2. Select Help & Settings → Preferences.
3. Open the Account tab.
4. Under the TTU account, select Unlink this Mac.^1^
5. If prompted to configure OneDrive again, sign in only with your personal Microsoft account.

Unlinking does not delete files stored in the university’s OneDrive cloud. The existing local TTU OneDrive folder becomes disconnected, so check that needed files are available before eventually deleting that local folder.

2. Remove the TTU mailbox from Outlook

1. Open Outlook for Mac.
2. Select Tools → Accounts.
3. Select the TTU account.
4. Select Manage → Remove Account.
5. Select Continue.^2^

This removes the mailbox configuration from Outlook on this Mac; it does not delete the university-managed account itself.

3. Clear the TTU Office sign-in

1. Open Word or Excel.
2. From the macOS menu bar, select Word or Excel → Sign Out.
3. Quit all Microsoft 365 applications—not just their open windows.
4. Reopen Word or Excel and sign in with the personal Microsoft account associated with your Microsoft 365 Personal subscription.[^3^](https://support.microsoft.com/accounts-billing/subscriptions/[Subscription ID] "Sign out of Office | Microsoft Support")

Office may sign out the active Office session rather than only one displayed identity. If that happens, simply reactivate Office with the personal account.

If TTU still appears

Cached credentials or licensing data may remain after the account has been removed from the applications.

1. Open Finder → Applications → Utilities → Keychain Access.
2. Find the entry associated specifically with the TTU account.
3. Right-click it and select Delete.^4^
4. Restart the Mac and sign in to Office with the personal account.

Avoid deleting unrelated Microsoft or personal-account credentials.

If Office still activates against TTU, use Microsoft’s Office License Removal Tool. This is a broader reset: it removes all Microsoft 365 licenses from the Mac, including the personal license, so have the personal account credentials and subscription information ready first. Run the tool, open an Office application, sign in with the personal account, and restart the Mac.^5^

These actions remove TTU from this Mac; they do not close or delete the university account. Only TTU’s administrators can manage the account itself.

References

1. Turn off, disable, or uninstall OneDrive | Microsoft Support
2. Outlook for Mac
3. [Sign out of Office | Microsoft Support](https://support.microsoft.com/accounts-billing/subscriptions/[Subscription ID])
4. Sign out or remove an account from Microsoft Teams
5. How to remove Office license files on a Mac | Microsoft Support