☆ It would be nice to add a setting that allows you to specify a transfer-prohibited address or domain.
☆ It is hoped that Power Automate can take over the transport rules of Exchange Online.

Sometimes when more than one workbook is opened, then a:
GeneralException: There was an internal error while processing the request
is thrown during various office-js operations.

See https://github.com/OfficeDev/office-js/issues/771 for details.

I know there's a workaround:
https://docs.microsoft.com/en-us/office/troubleshoot/excel/force-excel-to-open-new-instance
but it's impossible to force clients to use it.

Allow an option to have all calendar invites to be a Teams meeting by default instead of needing to manually set it as a Teams meeting each time.

I am trying to create an event to know what content control is selected. Alex Jerabek told me that "onSelectionChanged" could be useful but it is still in BETA. So I would like to ask you implement these events and release them.
Thank you very much for your time.

https://docs.microsoft.com/en-us/graph/api/user-list?view=graph-rest-1.0&tabs=http

"By default, only a limited set of properties are returned (businessPhones, displayName, givenName, id, jobTitle, mail, mobilePhone, officeLocation, preferredLanguage, surname, and userPrincipalName)."

Adicionar o Departamento nas informações do usuário.

At the moment addins run in EdgeHTML

Recently Chromium-based Edge has been released which is much faster than EdgeHTML

Add-ins should run in new, Chromium-based Edge.

Will it be "just done" at the next Windows update?

Similar to previous suggestion:
https://officespdev.uservoice.com/forums/224641-feature-requests-and-feedback/suggestions/31155925-office-add-ins-should-run-in-edge-not-ie11

Support Add-in development in Blazor

Microsoft have decided to make the E5 Developer Subscription available to only new developer subscriptions. Can this be made available to existing developers?

https://developer.microsoft.com/en-us/sharepoint/blogs/new-microsoft-365-e5-subscription-with-ems-now-available-for-developers/

My add-in's core value proposition lies in custom functions and we'd like to support as many platforms as possible.

Would be great to see custom functions capabilities coming to iPad alongside Web / Mac / Windows!

Currently displayMessageForm method is opening the message pointed by itemId in a new window.

It will be great if we could pass an option to the method Office.context.mailbox.displayMessageForm() that allows to replace the current visualized message with the new message indicated in itemId.

The use case that I want to enable here is to programmatically navigate with add-in javascript to arbitrary messages knowing their itemIds.

it would be nice to have an add in to create planner tasks from emails (similar to tasks in outlook) or link planner tasks to emails. Maybe even add the option to perform automated actions when the task is finished (e.g. move email to archive)

I am attempting to use the Document.getFileAsync method in Office Excel 2016 on Windows. Executing the method fails with an "Permission Denied" error.

Error code: 7000
Error name: "Permission Denied"
Error message: "You don't have sufficient permissions for this action."

This functionality is critical to our Add-in and we have many customers that use this 2016 volume licensed version of Office. They are not able to upgrade since the version is locked down at 16.0.4266.1001.

The LookUp formulas are very powerful tools for any kind of application. Often you are not only searching for the first corresponding value in an Excel sheet, but also for the last corresponding value in an Excel sheet. So reverse references would be very useful.
The Reverse VLookUp should therefore search from bottom to top in the matrix.
The Reverse WLookUp should therefore search from right to left in the matrix.

Current version of API lacks this functionality

Office now supports high-DPI and per-monitor DPI awareness, but custom task-panes do not. Add-in custom task panes are always hosted in a system aware host window and there is no way to indicate our add-in is high-DPI and multi-monitor DPI aware. Our customers therefore only see a low resolution user interface in the task panes. The Excel built-in task panes support high-DPI so this shouldn't be too difficult, maybe a registry setting indicating the add-in supports high-DPI or even an extra parameter to ICTPFactory.CreateCTP indicating support.

When ooxml is written back, please allow adding custom attribute to 'P'/section and any/all of its children, or to a 'Range'.
Once set, a 'search' can be done on any custom attribute and its value and a Range (or RangeList as indicated via search) be returned, covering all contiguous tags having the attr/value.

This, with some search improvements suggested (here: https://officespdev.uservoice.com/forums/224641-feature-requests-and-feedback/suggestions/40539628-word-api-search-improvements) will greatly improve user experience who's using the addin.

The requirement for me is using webRTC in office add-in, so we need to access to microphone, however there is no way to grant the access to microphone in desktop app(it works well on web side). so we want add-in can support this feature.

The Single Sign-on API is currently supported in office.js preview.

In desktop Outlook app you can set dark/light theme or follow system theme and you can read that value from Office.context.officeTheme so add-in color scheme would match the app.
You can set dark theme in Outlook web app but the issue is that Office.context.officeTheme returns undefined.