Using classic Outlook for Windows in business environments
Dear @Vicente B,
The registry value Microsoft.Office.Outlook.Hub.HubBar and the Outlook setting File > Options > Advanced > Show apps in Outlook control the same feature set in Classic Outlook, namely the modern app/navigation experience that places the navigation bar on the left side.
As a result, when the registry override is configured to move the navigation bar back to the bottom (or when Show apps in Outlook is disabled), the Apps framework is also disabled. Since the Copilot button is integrated into that Apps experience, it will be hidden and unavailable. This is expected behavior.
Therefore, if you disable Show apps in Outlook, the navigation bar will remain at the bottom, but the Copilot button will also be removed. At this time, I am not aware of a supported registry key or configuration that keeps the navigation bar at the bottom while simultaneously retaining the Copilot button in Classic Outlook.
In summary:
- Show apps in Outlook = Enabled > Left navigation bar + Copilot available.
- Show apps in Outlook = Disabled (or HubBar override applied) > Bottom navigation bar + Copilot hidden.
I recognize that this limitation can be inconvenient, and I truly appreciate your feedback. In this case, I sincerely recommend you go to Feedback community to vote this similar feedback: (find out similar feedback, if not provide the feedback forum link Ideas · Community). Your feedback has been duly noted and is highly valued, as it provides with essential insights to continue improving and refining the products and services in the future.
Please notice and accept my apologies that as moderators in the community, we are not supported for the product design and have limited resources for the advanced info for Microsoft products. To help you send your feedback and requirement to the related development team, we have redirected you to the correct path.
Again, I truly appreciate your patience and understanding. If you have any further questions or need clarification, please feel free to reach out.