OneNote add-in does not seem to be able to be uploaded via admin center or integrated apps for the organization

Your Environment

• Platform [PC desktop, Mac, iOS, Office on the web]: Office on Web
• Host [Excel, Word, PowerPoint, etc.]: OneNote
• Office version number: 16.0.15325.41001
• Operating System: Windows
• Browser (if using Office on the web): Edge

Expected behavior

Being able to deploy and publish OneNote Add-in using Microsoft 365 admin center.

Current behavior

Cannot deploy the OneNote add-in for the organization

Steps to reproduce

Try to upload a manifest for OneNote add-in

• When we try to upload the add-in from admin center we get no error, but the add-in is not uploaded. We noticed the following tooltip

• When we try from integrated apps we get the following error (different guid each time) and from the network we receive the following response for the manifest: UnableToUploadAddInsForBlockedApps

• We also tried with admin account to upload the manifest from the My organization tab, but this did not make the add-in available for the rest of the users

Attached the manifest with the image and end point URL's removed.

manifest-staging-onenote-ticket.txt

Context

• The manifest is valid since it is tested using the validation tool
• We need the add-in deployed for the organization and this is our only option as per article: https://docs.microsoft.com/en-us/office/dev/add-ins/publish/publish. This is the link from OneNote add-in documentation as well: https://docs.microsoft.com/en-us/office/dev/add-ins/onenote/