[Germany West Central] Outlook add-in issues - signatures might not be added again

As Microsoft is actively looking for the solution, we are closing this incident because it is not CodeTwo related. We were able to confirm that affected users cannot use any of their Outlook for Windows web add-ins including Microsoft's own Viva Insights add-in. We will provide more information in post-mortem communication when we learn more from Microsoft. If users in your organization experience Outlook add-in issues, please open a service request with Microsoft Support.

We can see the problem with Outlook add-in reported yesterday (https://status.codetwo.com/incidents/988w7914l855) is back for a subset of users in Germany West Central and might affect even customers who updated Outlook for Windows to the newest version (which temporarily resolved the problem yesterday).

This problem is related to Microsoft infrastructure and backend code, which CodeTwo has no control of, and it affects any Outlook web add-in in Outlook for Windows (also from other vendors). Microsoft has been working on resolving this issue since yesterday, but so far the problem has not been identified by them. CodeTwo is currently helping Microsoft with repro steps and finding the culprit.

If your users are affected and their signatures are not added as they type an email, please inform them to use Outlook on the web (OWA) until the issue is resolved, or you can use the server-side mode only for your organization (which will add all signatures after emails are sent - irrespective of the add-in functionality).

Add-ins in Outlook for Mac, OWA, iPhone and Android seem to work correctly across the entire user base.

The next update will be provided when we learn more about the problem.