Unfortunately, I couldn't find a direct download link for the Office 2021 proofing tools offline installer. Microsoft often changes its download links, and I don't want to provide an outdated or incorrect link.
<Configuration> <Add> <Product ID="ProofingTools"> <Language ID=" lang_id " /> </Product> </Add> </Configuration> Replace lang_id with the language ID of the proofing tools you want to install (e.g., "en-US" for English). office 2021 proofing tools offline installer
However, I can suggest an alternative:
If you're comfortable with command-line installation, you can use the following command to install the proofing tools: Unfortunately, I couldn't find a direct download link