While the official is best, there are edge cases.
Install the Dutch Language Pack for 64-bit Office - Microsoft Q&A office dutch language pack
The is a specific add-on from Microsoft that changes the user interface (menus, ribbons, dialog boxes) and adds Dutch proofing tools (spell check, grammar check, thesaurus, hyphenation) to your existing Microsoft Office installation. While the official is best, there are edge cases
If you are using an enterprise version without direct access to the Microsoft Store: While the official is best