It is important to select the correct regional pack. While both use the Portuguese language, and pt-BR (Brazil) have distinct spelling, grammar, and vocabulary differences. Installing the wrong pack can result in incorrect "corrections" that do not align with local standards.
If you use Office 2016 Professional Plus from a corporate deployment, you may need IT administrator rights to install language packs. The files are often available on the Volume Licensing Service Centre (VLSC). proofing tools office 2016 pt-pt
Pre-configured lists that fix common Portuguese misspellings in real-time. How to Download and Install pt-PT Proofing Tools It is important to select the correct regional pack
: Ensure you download the correct version for your Office installation: x86 for 32-bit or x64 for 64-bit. You can check this in Word via File > Account > About Word . If you use Office 2016 Professional Plus from
Ensure you choose the version that matches your Office installation—either x86 (32-bit) or x64 (64-bit).
The proofing engine in Office 2016 for Portuguese (pt-pt) goes beyond basic spell-checking: Install the Language Accessory Packs for Office 2016