Spam addin manifest could not be loaded in Outlook.

Question

Spam addin manifest could not be loaded in Outlook.

glr0221 opened this issue 4 months ago · 9 comments

URL of sample
https://github.com/OfficeDev/Office-Add-in-samples/tree/main/Samples/outlook-spam-reporting

Describe the bug
We tried to upload this manifest in one our customer environments and it failed to deploy.
It is important to note that any addin from the marketplace can be installed in the customer's environment.
However, any addin installed by deploying a manifest fails.

To Reproduce
We cannot reproduce internally in our environment.
We are hoping that the Microsoft team can help us determine if there is a setting in M365 environment that disables the sideloading/installing of custom apps via manifest files.

Steps to reproduce the behavior:
NA

Expected behavior
Installing an addin via manifest deploy/sideload should work.

Screenshots
NA

Environment

Platform [PC desktop, Mac, iOS, Office Online]: ______
Host [Excel, Word, PowerPoint, etc.]: ______
Office version number: ______
Operating System: ______
Browser (if using Office Online): ______

Additional context
Again installing an addin via manifest file fails. Installing addin via the marketplace works.
They have an existing Microsoft inquiry with case # : 2407170040011584

Thank you.

Answer 1 · 2024-08-14T16:12:07.000Z

Thanks for reporting this @glr0221.

@samantharamon, could you please investigate this?

Answer 2 · 2024-08-14T20:16:41.000Z

Hi @glr0221,

Your customer may not have the My Custom Apps role assigned to their user accounts. For information on this user role, see Specify the administrators and users who can install and manage add-ins for Outlook in Exchange Online.

Answer 3 · 2024-08-15T12:26:20.000Z

Thank you @samantharamon. I will try to advise our customer about this. Thank you again.

Answer 4 · 2024-08-16T00:46:12.000Z

No problem. Hope it resolves the issue they're experiencing. I'll go ahead and close this issue, but if your customer is still unable to sideload the manifest even after the suggested fix, please reopen this issue.

Answer 5 · 2024-08-16T01:55:45.000Z

Thank you @samantharamon @AlexJerabek . I will let you know what we find out. Thanks again.

Answer 6 · 2024-08-19T02:30:50.000Z

Hello @samantharamon @AlexJerabek ,

Our customer enabled the settings for custom apps and was still unable to sideload the addin. These are the settings they enabled for testing :

Any other advice we can share with them?

Again, Thank you very much.

Answer 7 · 2024-08-19T19:56:25.000Z

Hi @glr0221,

Thanks for the update. If I'm not mistaken, the Org Custom Apps role only allows an admin to install and manage add-ins in their organization. They would still need to assign the necessary user role (My Custom Apps) to the account their using for testing add-ins.

Answer 8 · 2024-08-22T03:00:00.000Z

Hello @samantharamon,

I got word from our customer. Seems like, it is working now for them. Thank you so much for your patience and support.

Again, thank you. Closing this ticket now.

Answer 9 · 2024-08-22T16:24:32.000Z

That's awesome news! Thanks for the update, @glr0221.