499149 – Microsoft Copilot (Microsoft 365): Updated UI for Copilot Chat Navigation Pane in Outlook

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check before: 2025-08-01

Product:

Copilot, Outlook

Platform:

US Instances, Web, World tenant

Status:

Launched

Change type:

Links:

Details:

The navigation pane has been repositioned from the right side to the left, offering a more intuitive layout. Despite the shift, it continues to host agents and conversation history, ensuring continuity in user experience. This redesign introduces new features, including access to the "All Conversations" page, which provides a comprehensive view of chat history. The change aims to enhance usability and streamline navigation within Copilot Chat.

Change Category:
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Scope:
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Release Phase:
General Availability

Created:
2025-07-26

updated:
2025-10-09

Docu to Check

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MS workload name

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summary for non-techies**

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Direct effects for Operations**

User Interface Disruption
The repositioning of the navigation pane may confuse users accustomed to the previous layout, leading to a temporary decrease in productivity as users adapt to the new interface.
   - roles: End Users, Support Staff
   - references: https://www.microsoft.com/en-us/microsoft-365/blog/2023/10/01/whats-new-in-microsoft-365-october-2023/

Learning Curve
Users may require additional training or time to familiarize themselves with the new features and layout, potentially leading to frustration and decreased efficiency during the transition period.
   - roles: End Users, Training Coordinators
   - references: https://www.microsoft.com/en-us/microsoft-365/blog/2023/10/01/whats-new-in-microsoft-365-october-2023/

Increased Support Tickets
The change may lead to an increase in support requests as users encounter issues or have questions about the new navigation and features, straining IT support resources.
   - roles: IT Support Staff, Help Desk Agents
   - references: https://www.microsoft.com/en-us/microsoft-365/blog/2023/10/01/whats-new-in-microsoft-365-october-2023/

Configutation Options**

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Opportunities**

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Potentional Risks**

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IT Security**

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explanation for non-techies**

Imagine you're in a library, and you've always found the catalog of books on the right side of the entrance. One day, the library decides to move the catalog to the left side. Initially, it might feel a bit strange, but the purpose is to make it easier for everyone to find and use. The catalog still contains all the information about the books and your past interactions with the library, but now it's organized in a way that might be more intuitive for most visitors.

Similarly, Microsoft has repositioned the navigation pane in Outlook's Copilot Chat from the right side to the left. This change is like moving the library catalog. The goal is to make it easier for users to navigate and find what they need. Even though the position has changed, all the important elements, like agents and conversation history, remain accessible.

Additionally, there's a new feature called the "All Conversations" page. Think of this as a new section in the library where you can see a list of all the books you've ever checked out. It gives you a complete view of your chat history, making it simpler to keep track of past conversations.

This update is designed to enhance the overall user experience by making navigation more straightforward and efficient, much like how reorganizing a library can help visitors find books more easily.

** AI generated content. This information must be reviewed before use.

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change history

DatePropertyoldnew
2025-10-09RM StatusIn developmentLaunched

Last updated 4 months ago ago

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