Office Add-ins developer platform community call – March 8th, 2023

Office Add-ins developer platform community call – March 8th, 2023

Office Add-ins developer platform community call - March 8, 2023

This month’s agenda and presenters

The call was hosted by Preethika Kiruveedula, Product Manager, Microsoft.

  • Word Extensibility APIs (Preview) - March 2023. Yun Wang, Principal Product Manager, Microsoft.
  • Q&A. See question and answers at end of call and in chat throughout call. Preethika Kiruveedula, Product Manager, Microsoft.

View video segments

Topic summaries

  • Word Extensibility APIs (preview) - March 2023. Five Word desktop APIs reviewed in last month’s call plus three new features (Application.retrieveStylesFromBase64, recognize deleted content controls and plain text content control support), are available now for you to test. Requires running desktop version 16.0.16130.20218 and above. Hear about all eight desktop features plus one new Word online feature “Track changes for content controls” is now in production. Targeting mid-year GA on features.

Call to action

Q&A (Question & Answers)

How long does it take to reflect the changes made in app registration inside Azure portal to the development?

It is generally a pretty quick process; that being said, there could be a myriad of reasons such as location that maybe causing delay. It would be great if you could provide us with more context here Github office-js issues.

What’s the timeframe for providing feedback from the “Auto install and auto launch add-ins for Word, Excel, and PowerPoint” survey?

Thank you for sharing great feedback. We’re planning to present the survey results in the next community call.

Are the functions in the demo still in beta?

Yes, the functions demoed are currently in preview.

Is there any documentation page about all this new Word API?

To learn more about the Word JavaScript API in preview, see Word JavaScript preview APIs.

Last month, you asked for missing Outlook events so that ISVs can migrate their existing Outlook COM add-ins to the new web based add-ins. With that in mind, we are looking for the following: 1. The ability to display a dialog when a Compose, Reply, Reply All, or Forward is clicked. The customers want to either display a warning or in some cases (like the Compose) they want to force the user to select from a list of pre-defined subjects (this is for a help desk scenario). Other (mostly legal) customers want to see a very prominent prompt show up when clicking on Reply All. 2. The ability to support on-send Outlook events (or Smart Alerts) in iPhone or Android. This is a frequent request from our customers and we need a roadmap from the Office team to know whether this is a planned feature or not, and what to tell our customers.

  1. We already have the events you need. We recommend you use our existing events in the following manner:
    • Trigger an event you can handle when users create new messages, reply, reply all, or forward.
    • As part of the handler of that event, display a notification bar so the user can select from the predefined list of subjects.  
    • When the notification bar is clicked, you can open a task pane from which the user can select and insert.
    • To make sure that the user is actually changing the subject, add an OnSend event handler. After the user clicks “send” you can validate if the subject is compliant and stop the send until the user changes it.
  2. Regarding the ability to support on-send Outlook events (or Smart Alerts) in iPhone or Android, this is in our backlog and is planned for implementation. 

I am looking at developing an add-in for PowerPoint. As the task pane and content add-in have different functions, are we able to essentially combine them into one add-in for the user? Or are there any issues with having two types of add-ins, with one add-in drawing information from the other? Would also like to know if there are any restrictions or security issues from developing the add-in this way.

It isn’t currently possible to develop a task pane and content add-in in a single add-in project. To submit a feature request with more information about your specific scenario, see

Will task pane in Outlook add-in support change default width?

We don’t have any plans to support this in the near future. That being said if you would like to submit a feature request for this you can create one here:

General Resources

Stay connected