Total Protection Outlook add-in is intermittently disappearing from customer environments

We are currently investigating reports of a small subset of M365 Tenants are encountering issues about the Total Protection Outlook add-in is intermittently disappearing from customer environments and cannot be redeployed, neither automatically nor manually.

Initial analysis has not yet identified the root cause of the deployment issue, and the behavior cannot be reproduced in our testing environments.

To expedite resolution, we have opened a Severity A ticket with Microsoft for further insight into the underlying root cause. Our teams will continue to investigate in parallel, and we will provide updates as soon as more information becomes available.

Microsoft is able to replicate the issue.
The case has been escalated to Microsoft to provide a solution as fast as possible.

As soon as we have new Information we will share it.

Microsoft is continuing to investigate the reason for the failed automatic and manual installations of the Total Protection add-in.

We will update you as soon as we have more informations.

A combined Microsoft and Hornetsecurity Engineers Team is working strained to resolve the Outlook Add-in deployment issues for the manual and the automatic installations.
We will keep you posted.

This issue continues to impact a very small subset of Microsoft tenants.

The team at Microsoft is continuing to investigate further into the reason for the failed automatic and manual deployment of Hornetsecurity and other add-ins.