Because this component is a core part of the English Office 2016 experience, its value is tied to the suite itself. Microsoft Support
"Microsoft Office Shared MUI -English- 2016" is a critical system component for anyone using the English-language version of the Office 2016 suite. It acts as the "shared" interface layer, separating language-specific text from the software's core code to allow for a flexible, multilingual user experience. What is Microsoft Office Shared MUI? microsoft office shared mui -english- 2016
The term "Shared" indicates that this component is not exclusive to a single application. Instead, it provides resources and functionalities that are common across all Office applications. For example, the spell-check dictionary, the clipboard manager, and the file open/save dialog boxes are all "shared" resources. This shared infrastructure prevents redundancy—instead of installing the same proofing tools inside Word, Excel, and PowerPoint separately, Office installs them once in a "shared" folder. Because this component is a core part of
Install alongside a non-English base Office (e.g., French Office 2016) to make the UI switchable to English. What is Microsoft Office Shared MUI
If you have upgraded to Microsoft 365 (formerly Office 365), you may still see the label in the Shared MUI entry. Why?