Office 2021 Proofing Tools Offline Installer May 2026

For users of Office 2021, the Office Deployment Tool (ODT) is the primary method for creating an offline installer for proofing tools. While older versions of Office (like 2016) had standalone proofing tool executables, Office 2021 uses a "Click-to-Run" architecture that requires the ODT and a customized .xml configuration file to download and install these tools for offline use. Essential Requirements for Installation Before starting, ensure you have the following:

Part 3: Legitimate Sources – Where to Download the Offline Installer

  • Copy the SourcePath folder to your offline distribution server, network share, or USB media.
  • On each offline target, run:
    1. Mount the ISO: Right-click the downloaded Office_2021_Language_Pack.iso and select Mount.
    2. Navigate: Open the new virtual DVD drive.
    3. Find your language: Look for a folder named after your language code (e.g., de-de for German, fr-fr for French).
    4. Run the installer: Inside the language folder, double-click x64 or x86 (match your existing Office architecture). Run setup.exe.
    5. Follow prompts: The installer will automatically detect your Office 2021 installation and add the proofing tools.
    6. Restart: Close and reopen Word to see the new language options.

    These components are language-specific. For example, if a user needs to write documents in French, German, and Spanish but only has English Office installed, proofing tools for those languages must be added separately. office 2021 proofing tools offline installer