User selection dialog always shows up everytime for NAA-SSO in outlook clients using IE.

[glr0221]

URL of sample
Outlook-Add-in-SSO-NAA-IE

Describe the bug
I am unsure if this is a bug or is by design. The select user dialog always shows whenever getTokenWithDialogApi() is called.

To Reproduce
Please run the sample as is and run it on a IE-backed outlook client.

Steps to reproduce the behavior:

1. Install the sample provided in the URL.
2. Open the sample addin in an IE-backed outlook client.
3. The dialog to select a user pops up. Click on the user and allow it to succeed.
4. Close the addin.
5. Open the sample addin again in the same IE-backed outlook client.
6. The dialog to select a user pops up again. Click on the user and allow it to succeed.

Expected behavior
I don't know if this is expected behavior or not. Thank you.

Environment

• Platform [PC desktop, Mac, iOS, Office Online]: PC
• Host [Excel, Word, PowerPoint, etc.]: Outlook
• Office version number: Any IE-backed Outlook client
• Operating System: Windows
• Browser (if using Office Online): NA

Additional context
We wanted to check if this is expected behavior. Is it expected to ask the user to select an account every time the dialog pops up? Thank you.

[AlexJerabek]

Thanks for raising this question @glr0221.

@codexeon, could you please weigh in?

[davidchesnut]

Hi @glr0221,

Unfortunately with IE 11 (Trident webview) your add-in has to use MSAL v2. The only way to cache the token is to send it from the dialog popup to your task pane, at which point you can use it until it expires. But then you'll need to use another popup dialog to obtain a new token.

I don't think we programmed this scenario into the sample, so it likely is popping up a dialog on each token request. So that's something we should address in the sample. Also I don't think the sample shows how to handle the user switching email accounts in the client. so we need to update the sample with both of those scenarios.

Thanks,
David

[glr0221]

Thank you @davidchesnut . Looking forward to the updated samples whenever they arrive. Thank you again.