Unable to use my personal account to activate Microsoft 365 office apps

This usually means the desktop apps are trying to use a work or school identity path instead of the Microsoft account that owns the Microsoft 365 Personal subscription.

Use this sequence:

1. Verify the subscription is attached to the correct personal Microsoft account.
   • Sign in to Services & subscriptions at https://account.microsoft.com/services.
   • Confirm the Microsoft 365 Personal subscription is listed there.
   • If it is not listed, that email address is not the account that owns the license.
2. Sign in to Microsoft 365 with the correct account.
   • Go to www.microsoft365.com and select Sign In.
   • Use the personal Microsoft account associated with the subscription, not a work or school account.
   • From there, use the install option to install or reinstall the apps.
3. Remove any work or school account connection from Windows.
   • Open Settings > Accounts > Access work or school.
   • If an organization account is listed, select it and Disconnect it.
   • This is especially relevant when the device was previously signed in to Office with a work account.
4. Remove old Office sign-in remnants.
   • Open Control Panel > Credential Manager > Windows Credentials.
   • Delete credentials related to the old organization account.
   • Then restart Windows.
5. Check for multiple Office installations.
   • Open Control Panel > Programs > Programs and Features.
   • Search for office.
   • If more than one Office version is installed, uninstall the version not being used.
   • Restart the PC after uninstalling.
6. Reinstall from the subscription account.
   • After restart, sign back in at www.microsoft365.com.
   • Install the desktop apps from that account.
   • Then open an Office app and sign in with the same personal Microsoft account.
7. If activation still fails, try a clean Windows profile.
   • A Microsoft Q&A accepted answer recommends testing activation from a new local administrator profile when an old work/school identity is still affecting Office.

Important points:

• Personal Microsoft accounts and Microsoft 365 work or school accounts cannot be merged.
• Microsoft 365 apps do not support being signed in to multiple user accounts from the same organization or tenant at the same time; sign out from one before signing in with another.
• If Office says Unlicensed Product, the documented first checks are: sign in with the account used to buy Office, remove extra Office installs, and verify subscription status.
• If the apps are not already installed and there is no install option after signing in with a work or school account, that is an admin-managed organization scenario, not a Microsoft 365 Personal scenario.

If the subscription is visible on account.microsoft.com/services and the problem continues after removing the work account connection, clearing credentials, uninstalling extra Office copies, and reinstalling from the subscription account, use the Microsoft sign-in helper or Contact Support path.

• Unlicensed Product and activation errors in Office
• Sign in to Microsoft 365
• Why do I need an account to sign in to Microsoft 365 or Office?
• Which account do you want to use?
• Installed Microsoft 365 Personal apps on Windows laptop. Apps do not recognise my e-mail address - Microsoft Q&A
• Can't sign in to microsoft 365 desktop apps - Microsoft Q&A
• I can't activate my microsoft office - Microsoft Q&A