Outlook may use a different default language than Word. Solution:
If you are using a Volume License version, you can run the original installation media or setup files and select "Add Languages" to include Portuguese (Portugal). Configuring and Using the Tools
: Supports European Portuguese standards, distinct from the Brazilian Portuguese (pt-BR) version.
Installing a 64‑bit proofing tool on a 32‑bit Office will cause an error message: “A compatible version of Microsoft Office is required before you can install additional proofing tools.”
: Obtain the correct version for your system (either x86 for 32-bit or x64 for 64-bit) from the Official Microsoft Download Center .