How to install Office LTSC installation files not found in VLSC

Office files can be downloaded separately.


The following steps apply to only the following programs:

  • Office LTSC Professional Plus 2021
  • Office LTSC Standard 2021
  • Visio LTSC Professional 2021
  • Visio LTSC Standard 2021
  • Project Professional 2021
  • Project Standard 2021

Follow these steps to download and install your Office LTSC, Visio LTSC, or Project 2021 software or application.


The screenshots show examples that might not match your own experience.

  1. In Microsoft Edge, browse to Office Deployment Tool, and then select Download.


    The file will automatically be saved to the Downloads folder on your device. Office LTSC 2021 requires version 16.0.14326.20404 or a later version of the Office Deployment Tool. This version was released on September 17, 2021.

  2. Select the Open file link under the file name.

    Screenshot that shows the Open file link under the file name in the Downloads window.

  3. A pop-up window will display the Microsoft Software License Terms. Select the check box to accept the terms, and then select Continue.


    If you are prompted to select a location that you want the files saved to, select the folder that you created.

    Screenshot of the Microsoft Software License Terms.

  4. When you are prompted to select a folder to store the extracted files in, select Desktop > Make New Folder > OK.

  5. If you have purchased Office LTSC Professional Plus 2021, Visio LTSC Professional 2021, and Project Professional 2021, you can use the sample configuration file (configuration-Office2021Enterprise.xml) that's included with the Office Deployment Tool to install your products. In this case, you can skip to Step 22 in these instructions. If you have purchased only one of these products, go to the next step to use the Office Customization Tool.

  6. Browse to the Microsoft 365 Apps admin center. Do not try to sign in. Scroll down to see the available options at the bottom of the page without signing in.

  7. Under Create a new configuration, select Create to open the Office Customization Tool.


    The following steps describe the simplest method to create a configuration file. For more information about the various configuration options, see Configuration options for the Office Deployment Tool.

    Screenshot that shows the Create button to create a new configuration.

  8. Under Products and releases > Architecture, select 64-bit.

    Screenshot of the page to select the architecture option.

  9. Under Products, select the products that you want to deploy.

    Screenshot of the page to select products.

  10. Under Update channel, Office LTSC 2021 Perpetual Enterprise will be listed as the Update Channel. Do not change this setting.

    Screenshot of the page to select update channel.

  11. Under Apps, use the toggles to determine which apps will be installed, and then select Next.

    Screenshot of the page to select apps.

  12. Under Language, select the primary language, and then select Next.

    Screenshot of the page to select languages.

  13. Under Installation, select the options that match your requirements, as necessary, and then select Next.

    Screenshot of the page to select installation options.

  14. Under Update and upgrade > Update and upgrade options, select the options that match your requirements, as necessary.

    Screenshot of the page to select update options.

  15. Under Upgrade options, indicate whether you have to keep any of the products that are already installed on the device, as necessary, and then select Next.

    Screenshot of the page to select upgrade options.

  16. Under Licensing and activation, select the Multiple Activation Key (MAK) option, type the volume license key that's specific to the product, switch the Autoactivate slider to On, and then select Next.


    • By default, users have to accept the End User License Agreement. You can switch the Automatically accept the EULA slider to Off to accept it for them.
    • Under Product activation, only the User based option can be selected.
    • If your organization uses Key Management Service (KMS) activation, select the KMS Client Key option instead.

    Screenshot of the page to select licensing and activation options.

  17. Under General, type your name or the name of your company or organization, and then select Next.

    Screenshot of the page to provide organization name and configuration purposes.

  18. Under Application preferences, select Finish.

    Screenshot of the page that shows application preferences.

  19. In the upper-right corner of the page, select Export.

    Screenshot that shows the Export button.

  20. In the Default File Format window, select a format for Office LTSC 2021, and then select OK.

    Screenshot of the page to select the default file format.

  21. In the Export configuration to XML window, select the I accept the terms in the license agreement check box. In the File Name text box, type Configuration, select Export, and then move the Configuration.xml file to the new folder that you created in Step 4.


    The folder that the file is saved to will vary depending on the web browser that you use. Note the location that the browser saves to. For example, if you use Microsoft Edge, the Configuration.xml file will be stored in the Downloads folder.

    Screenshot of the Export configuration to XML page.

  22. Open an elevated Command Prompt window. (Select the Windows button, type CMD, right-click Command Prompt, and then select Run as administrator.)

  23. Type cd <file path>, and then press Enter. The command prompt line is now updated to the location where the files were downloaded.


    The <file path> placeholder corresponds to the file path of the location to which you downloaded the file.

  24. Run the following command to start the Office installation:

    Setup /configure configuration.xml


    If you are on a slow or limited bandwidth internet connection, use the following command instead:

    Setup /download configuration.xml

How to activate Office LTSC by using a product key

If automatic activation did not work, you can manually activate your software by following these steps:

  1. Open a Word, Excel, or PowerPoint file, and then select File.

  2. Select Account > Change Product Key.

    Screenshot of the page to change product key.

  3. Type the product key in the text box, and then select Activate Office.


    You might have to close the Office application and restart it in order to see Office as licensed.