Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
A personal laptop can show managed by your organization if a work or school account was connected to Windows under Settings > Accounts > Access work or school. That can apply organization policies to the device and can interfere with sign-in behavior.
Try this in order:
- Check for a connected work or school account
- Open Settings > Accounts > Access work or school.
- If an old work or school account appears there, select it and choose Disconnect.
- Restart the laptop.
- Clear old Microsoft 365 sign-in information
- Sign out of all Office apps, then close them.
- Open Control Panel > User Accounts > Credential Manager.
- In Windows Credentials and Generic Credentials, remove entries related to Microsoft 365 or the old organizational account.
- Restart the laptop.
- If Office still behaves as if the old organization is attached
- Close Office apps.
- In File Explorer, go to:
%localappdata%\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy - Delete the files and folders there.
- Clear the browser cache.
- Restart the laptop.
- Use the correct install path for the license type
- If the product key is for a home Office or Microsoft 365 product, redeem it first at
https://microsoft365.com/setupusing the Microsoft account that will own the license. - After redemption, sign in with that same Microsoft account to install or reinstall Office.
- If the product key is for a home Office or Microsoft 365 product, redeem it first at
- If the key says it was already used
- That usually means the key was already redeemed and added to a Microsoft account.
- In that case, install Office by signing in with the Microsoft account that redeemed the key rather than entering the key again.
- If the Office product was preinstalled and did not require a Microsoft account originally
- Some preinstalled Office products must be reinstalled from the Microsoft Store app instead of by product key redemption.
- If the reset still fails or the device remains organization-managed
- Contact Microsoft support. The install and activation articles explicitly point to Microsoft support when the problem cannot be resolved.
Important: avoid registry-deletion fixes from random internet posts unless a trusted Microsoft article specifically requires them. Those steps can damage Windows configuration.
References:
- My school account has taken over my personal laptop - Microsoft Q&A
- Why do I need an account to sign in to Microsoft 365 or Office?
- Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or Mac
- "This product key has already been used" error in Office
- Reinstall Office from the Microsoft Store app