Transfer office license to a new computer

To transfer your Office license to a new computer, you should ensure that the previous installation is completely uninstalled. If you are receiving a notification that the license was previously installed, it may indicate that the license is still tied to the old installation. Here are the steps you can follow:

1. Uninstall Office from the Old Computer: Make sure that Office is fully uninstalled from the previous computer. You can use the Microsoft 365 Uninstall troubleshooter to assist with this process.
2. Sign Out of Microsoft Account: If you were signed in to your Microsoft account on the old computer, sign out to ensure that the license is released.
3. Install Office on the New Computer: Download and install Office on your new computer. Make sure you are using the same Microsoft account that was associated with the original license.
4. Activation: When prompted, sign in with your Microsoft account to activate Office. If you continue to receive the notification about the previous installation, you may need to check your Microsoft account to see if the license is still associated with the old device.
5. Manage Licenses: You can also manage your licenses through the Microsoft 365 Admin Center if you have access to it. This will allow you to see which devices are using your licenses and deactivate the old one if necessary.

If you still encounter issues, consider contacting Microsoft support for further assistance.

References:

• Microsoft 365 Apps activation error: "You currently have not been assigned an office license that includes the Office desktop apps"
• Overview of licensing and activation in Microsoft 365 Apps

I have a valid product license (I activated it and used for 5 years), I uninstalled the software from a previous computer. I need to install it on a new one. The question on how do I do it has not been resolved.

Is this a perpetual license such as Office 2021? In that case, you should be able to install using your associated account at https://account.microsoft.com/services. Note that you may have to contact Microsoft support for assistance with activation.