Office.context.mailbox.item is undefined in shared mailbox

[ChibaniMohamed]

I'm developing an Outlook Add-in using :
"@microsoft/office-js": "^1.1.93"

Your Environment

• Platform [PC desktop, Mac, iOS, Office on the web]: PC desktop
• Host [Excel, Word, PowerPoint, etc.]: Outlook classic
• Office version number: Version 2407 Build 16.0.17830.20166
• Operating System: Windows
• Browser (if using Office on the web): it works fine on Web

Expected behavior

Office.context.mailbox.item should return an object

Current behavior

Item is always undefined when i select it from shared mailboxes or shared folders (Outlook classic only)

[zhngx1]

Can you follow the docs here for referencing Office.js instead of using the package?
https://learn.microsoft.com/en-us/office/dev/add-ins/develop/understanding-the-javascript-api-for-office#accessing-the-office-javascript-api-library

[ingin97]

@zhngx1 We are also experiencing this exact problem. Only applies to shared folders on Outlook classic like the author reported.
We are using the CDN to office.js as you asked the author to check.
Anything else you need to speed up the processing time? Or do you know of any other ways to retrieve the email?

We are also experiencing an error when trying to retrieve an auth token for the shared folder email: A REST token is only available with ReadWriteMailbox permission when there is no item context. Even though we are using Office.context.mailbox.getCallbackTokenAsync({isRest: false}).
Not sure if you can use this in the context for solving the problem, or if it is a seperate issue.

[ChibaniMohamed]

Any updates on this issue ? We are still facing the same problem .