You can try using the Microsoft Office Deployment Tool (ODT) to download and install the proofing tools. ODT allows you to download and install Office products, including proofing tools, using a command-line interface.
If you're comfortable with command-line installation, you can use the following command to install the proofing tools: office 2021 proofing tools offline installer
You're looking for the Office 2021 proofing tools offline installer. Here's what I found: You can try using the Microsoft Office Deployment
<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). including proofing tools
setup.exe /configure proofingtools.xml Assuming you've downloaded the ODT and extracted it to a folder, create a proofingtools.xml file with the following content: