Offline Installer Best — Office 2021 Proofing Tools

Ensure the architecture of your installer (32-bit vs. 64-bit) matches the installed Office 2021 version.

Overview Office 2021 includes language proofing tools (spelling, grammar, hyphenation, thesaurus) that may not be installed for every language by default. An offline installer lets you add or update proofing tools without needing each client to download components from Microsoft over the internet — useful for air-gapped or bandwidth-limited environments. office 2021 proofing tools offline installer best

Under , verify your newly installed languages are listed. Ensure the architecture of your installer (32-bit vs

: Ensure your OfficeClientEdition in the XML file matches your installed Office version ( 32 or 64 bit). Mixing architectures will cause the installation to fail. An offline installer lets you add or update

As a workaround, you can still install the standard Language Accessory Pack after installing the English version of Office LTSC, but this is not officially guaranteed to work for all languages.