If you have Office 2016 Professional Plus as part of a Microsoft 365 plan:

If you want, I can:

If your business or school utilizes the MSI version of Office 2016, IT administrators should download the ISO or executable files directly from official Microsoft deployment portals:

Once the installation finishes, you must configure Office to use the new language assets. Launch or Excel 2016 . Go to File > Options > Language .

Complete Guide to Microsoft Office 2016 Language Pack Offline Installers

Click the appropriate link for your system: or Download (64-bit) .

Suggest alternatives if you are facing errors during installation. Let me know how you'd like to proceed. Share public link

If the display language changes but spellcheck does not work, make sure the language ID in your XML file exactly matches the regional variant you need (e.g., en-us for US English vs. en-gb for UK English). Conclusion