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I uninstalled Office LTSC 2021 from old machine but still cannot activate it on a new machine

Ulrich Fox 0 Reputation points
2025-04-04T07:41:21.94+00:00

I have a new computer and uninstalled my Office LTSC 2021 package from the old machine to migrate to the new. However I still cannot activate it there.

Office Management
Office Management
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Emi Zhang-MSFT 30,011 Reputation points Microsoft External Staff
    2025-04-08T01:26:20.4933333+00:00

    Hi，

    It sounds like you're encountering an activation issue after transferring your Office LTSC 2021 package to your new computer. Here are some steps you can follow to resolve this:

    1. Uninstall Office from the old computer: Ensure that Office LTSC 2021 is completely uninstalled from your old machine.
    2. Install Office on the new computer: Follow the installation steps using the Office Deployment Tool.
    3. Activate by telephone: Since you've already used the license on another computer, you might need to activate Office by phone. Open any Office application, go to File > Account > Activate, and choose the option to activate by telephone.

    If these steps don't resolve the issue, you can contact Microsoft Support for further assistance.

    Let me know if you need more detailed instructions or have any other questions!

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