Is it possible for a Next.js web app to open Microsoft Word with a specific Word Add-in (built with React) on button click?

Hi @Khoa

Welcome to the Microsoft Q&A Forum. 

I understand you're looking to open Microsoft Word and automatically load a specific Word Add-in from a button click in your Next.js web application. 

After carefully reviewing Microsoft’s public documentation, there doesn’t appear to be any supported method or API that allows a browser-based web application to directly launch the Word desktop client and programmatically activate or preload a specific Office Add-in. 

You can read more about current deployment and activation models here: 

• Office Add-ins overview – Microsoft Learn 
• Deploy and publish Office Add-ins - Office Add-ins | Microsoft Learn 

I know this may not be the outcome you were hoping for, and I truly appreciate the time you've spent researching this scenario. As a moderator, my role is to help guide discussions and provide support based on publicly available Microsoft documentation and knowledge shared within the community. At this time, there is no indication from Microsoft that this type of functionality is supported.

Thank you for your patience and understanding. If you have any further questions, please feel free to reach out to us again.

If my answer was even partially helpful, please kindly mark it as accepted so others with the same issue can benefit as well.    

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