Run the setup.exe from the downloaded source folder on a target machine.
Run the downloaded file to install the tools. You can save this file for future offline use on other machines. Microsoft Support Option 2: Use the Office Deployment Tool (Advanced Offline) office 2021 proofing tools offline installer
The online installer works for 90% of users. But for the other 10%—the IT admins, the security analysts, and the international lawyers—the is a lifeline. Run the setup
installers for these tools, making the "offline" aspect more complex to manage. Microsoft Learn Core Capabilities Comprehensive Language Support Microsoft Support Option 2: Use the Office Deployment
Microsoft’s public Language Accessory Pack page typically serves the Click-to-Run online installer. However, if you right-click the download button and copy the link, you may find a direct URL ending in .exe for the offline version. Example pattern: https://download.microsoft.com/download/.../ProofingTools_2021_xx-XX.exe