How to revert back to 2019 Microsoft Office from Microsoft 365

Lamb 20 Reputation points
2025-12-03T16:53:00.0066667+00:00

Microsoft 365 was installed on my computer and is requesting a product key which I have for Microsoft Office 2019. How do I revert back to Microsoft Office 2019? I don't have the software.

Microsoft 365 and Office | Install, redeem, activate | For business | Windows
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  1. Q&A Assist
    2025-12-03T16:53:08.78+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    To revert back to Microsoft Office 2019 from Microsoft 365, you will need to uninstall Microsoft 365 first and then install Office 2019. Here are the steps you can follow:

    1. Uninstall Microsoft 365:
      • Go to the Control Panel on your computer.
      • Select "Programs and Features".
      • Find Microsoft 365 in the list of installed programs, select it, and click "Uninstall".
    2. Install Microsoft Office 2019:
      • Since you mentioned that you do not have the software, you will need to obtain the installation files for Office 2019. This can typically be done by purchasing it from a retail store or through a volume licensing agreement if applicable.
      • Once you have the installation files, run the setup and follow the prompts to install Office 2019.
      • During installation, you will be prompted to enter your product key for Office 2019.
    3. Activate Office 2019:
      • After installation, open any Office application and enter your product key to activate it.

    Make sure to back up any important documents before uninstalling Microsoft 365 to avoid losing any data.

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