Finding and installing the can be tricky because this version of Office has officially reached its "End of Life" as of April 11, 2023. While the software still works, Microsoft has removed many direct download links for the base language packs.
Ensure you are logged in as an administrator on your PC to run the setup. Version Mismatch: Microsoft Office 2013 Language Pack PT-PT Download
The primary hurdle for users today is that Microsoft has officially ended support for Office 2013 and has removed the direct download links for Language Packs from their main servers. The old "Language Accessory Pack" pages that allowed you to select a language and download an .exe or .img file no longer host the 2013 versions. Microsoft Office 2013 Language Pack (PT-PT) Finding and