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Auto open taskpane with manifest.xml behaviour vs manifest.json unified

Area: add-in UIIssue related to UI features such as Fabric, dialogs, add-in commands, etc.Issue related to UI features such as Fabric, dialogs, add-in commands, etc.

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Status: Open.

#6660 In OfficeDev/office-js;

· kpapakon opened on Apr 27, 2026

office.context.mailbox.item.sendAsync doesn't work on new outlook meeting draft

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Status: Open.

#6659 In OfficeDev/office-js;

· Xin-Riva opened on Apr 24, 2026

No supported way to declare platform scope in Office add-in manifest — Marketplace certification blocker

Type: product questionQuestion about the Office Add-ins platform or Office JavaScript APIsQuestion about the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6658 In OfficeDev/office-js;

· vibhor-mungee opened on Apr 24, 2026

Word Online issues when inserting Content Control using Office.js

Area: WordIssue related to Word add-insIssue related to Word add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Possible-Solution

Similar-Issue

Status: Open.

#6657 In OfficeDev/office-js;

· barisbikmaz opened on Apr 23, 2026

OnMessageSend Smart Alerts Classic Outlook Add-in runtime continues after calling event.completed()

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Similar-Issue

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6656 In OfficeDev/office-js;

· alexm-plutoflume opened on Apr 23, 2026

EquivalentAddins + namespace stripping leaves no migration path that preserves both XLL and existing Office.js workbooks

Area: ExcelIssue related to Excel add-insIssue related to Excel add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Possible-Solution

Similar-Issue

Type: product questionQuestion about the Office Add-ins platform or Office JavaScript APIsQuestion about the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6655 In OfficeDev/office-js;

· evelyn-chrono opened on Apr 22, 2026

Placing image in Word web app not working

Area: WordIssue related to Word add-insIssue related to Word add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Type: product questionQuestion about the Office Add-ins platform or Office JavaScript APIsQuestion about the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6654 In OfficeDev/office-js;

· addin-dev-24 opened on Apr 22, 2026

No programmatic way to pin the task pane for users

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Type: product feature requestOffice JS ideas that should be posted to aka.ms/m365dev-suggestions (formerly User Voice.)Office JS ideas that should be posted to aka.ms/m365dev-suggestions (formerly User Voice.)

Status: Open.

#6653 In OfficeDev/office-js;

· mikey8808 opened on Apr 22, 2026

getComposeTypeAsync returns newMail for Reply / Reply All / Forward on Outlook for Windows and Mac (works correctly on Outlook on the Web)

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6652 In OfficeDev/office-js;

· Ashish200107010 opened on Apr 22, 2026

getSharedPropertiesAsync() not working correctly for classic Outlook for some of our customers.

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Possible-Solution

Similar-Issue

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6651 In OfficeDev/office-js;

· glr0221 opened on Apr 22, 2026

Outlook AddIn 'item.notificationMessages.replaceAsync(id, JSONmessage)' does not replace the messages

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6650 In OfficeDev/office-js;

· guzman-rc opened on Apr 21, 2026

OnMessageSend event triggering in Outlook classic when not add-in is not centrally deployed

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Possible-Solution

Similar-Issue

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6649 In OfficeDev/office-js;

· LiamWarnes opened on Apr 21, 2026