Javascript exception on initial attempt at running Office-Add-in-ASPNET-SSO sample about office-add-in-samples

[AlexJerabek]

Hi @davidhjones,

Sorry you're encountering issues. Quick question: are you starting with the Begin or Complete version of this sample?

[davidhjones]

I am starting with the Complete version of this sample.

[AlexJerabek]

Hi @davidhjones,

The behavior from the browser pop-up is expected. The add-in has to be run from the task pane in Excel. I see from your video that the task pane pops up with an error. Does that consistently happen? What happens when you click "Restart" in the task pane?

[AlexJerabek]

One thing that may help an add-in in a bad state is clearing the cache: https://learn.microsoft.com/en-us/office/dev/add-ins/testing/clear-cache. Let us know if that gets your task pane in a workable state.

[davidhjones]

Interestingly enough, when I loaded it up this morning, the Add-in does load in the task pane. Unfortunately, now I'm getting a different error. Oddly enough, following the code I would expect that my breakpoint in FilesController would get triggered to execute the code below, but it isn't.

let accessToken = await Office.auth.getAccessToken(options);
fileNameList = await callRESTApi("/api/files", accessToken);

MSAL.authentication.required.mp4

[davidhjones]

I have confirmed that the exception is thrown from await Office.auth.getAccessToken(options);, which explains why my breakpoint is never triggered (on the server).

[davidhjones]

One thing to note, I have been able to make progress by switching to the Outlook add-in SSO sample. I did have issues testing with a client outside of my account’s tenant, but I believe that’s due to me not having administrative privileges to approve the Application.

[AlexJerabek]

Hi @davidhjones,

Sorry for the delayed response; I've been out. Since the MSAL fallback path is triggering, I'm guessing there's some piece of setup that's incorrect in Azure. Double-check the Redirect URL, authorized client applications, and scopes. A setup error would explain why the Outlook sample is working and the Excel one is not.

[microsoft-github-policy-service]

This issue has been automatically marked as stale because it is marked as needing author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. Thank you for your interest in Office Add-ins!

[microsoft-github-policy-service]

This issue has been closed due to inactivity. Please comment if you still need assistance and we'll re-open the issue.