Microsoft 365 Companion Apps for Copilot on Windows 11

Microsoft 365 Companion Apps are becoming a core part of a successful Copilot rollout on Windows 11. If you are an IT admin or tech lead planning Copilot adoption, these apps are not something to skip.

The Companion apps (Files, People, Calendar) sit alongside Microsoft 365 Copilot and give users fast access to the content Copilot relies on. They reduce context switching, improve prompt grounding, and remove friction during everyday work.

This article walks through what the Companion apps are, how they are deployed, where the admin controls live, and what to consider before enabling them at scale.

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What are Microsoft 365 Companion Apps

Microsoft 365 Companion Apps are lightweight Windows 11 apps that surface Microsoft 365 data directly from the operating system.

Files
The Files companion app is a lightweight, taskbar-integrated view into your Microsoft 365 files without needing to open File Explorer, Teams, SharePoint, or OneDrive. It aggregates and indexes files stored in SharePoint, OneDrive for Business, Teams, and Outlook so users can search, preview, and open documents directly from the taskbar. Because it uses Microsoft Graph, the search is context-aware and respects permissions; users only see files they already have access to. Copilot integration in the Files app means that users can ask questions like “show me the latest budget documents shared with me” and get AI-assisted results right inside the app, reducing the need to jump between apps and improving workflow continuity.

People
The People companion app gives quick access to organisational contact information sourced from Microsoft Entra ID and Microsoft 365 Graph data. Instead of opening Outlook or Teams to look up a colleague’s email, phone, role, department, or reporting chain, you can click the People icon on the Windows 11 taskbar and see that information immediately. Search can be done by name, department, job title, or skill, and results are linked into Outlook, Teams chat, and call actions.

With Copilot integration, the People app becomes more than a static directory. Copilot can summarise recent communications with a person, highlight relevant meetings or follow-ups, and pull contextual data related to that contact directly in the app. For admins, this means less helpdesk traffic for basic lookup requests and a smoother user experience when collaborating across teams

Calendar
The Calendar companion app displays your upcoming events, meetings, and availability without launching Outlook. It pulls data from Microsoft 365 calendars via Microsoft Graph and presents it in a streamlined, taskbar-accessible view so users can glance at schedules, search for appointments, and join meetings faster. Microsoft’s documentation describes Calendar as a way to “stay focused, reduce context switching, and complete tasks faster” by letting users interact with their schedule independently of full Outlook or Teams windows

Like the other Companion apps, Calendar is designed to work with Copilot. While Copilot capabilities in Calendar are rolling out, the integration aims to let users ask questions about their schedule (“what’s my next meeting?” “summarise today’s events”) and get responses tied to the calendar data you already use.

These apps are designed to be used alongside Copilot. Instead of asking Copilot to locate content blindly, users can open the relevant file, meeting, or contact first, then ask more accurate and grounded Copilot prompts.

From an admin perspective, Companion apps solve three common Copilot rollout problems.

Reducing context switching
Users no longer need to jump between Outlook, Teams, OneDrive, and SharePoint just to find context before using Copilot.

Improving Copilot grounding
Copilot performs better when the user already has the right document or meeting open. Companion apps shorten that path.

Lowering adoption friction
New Copilot users often struggle with where to start. Companion apps give clear entry points into organisational data without training overhead.

How Microsoft 365 Companion Apps are deployed on Windows 11

In most environments, Companion apps do not require a separate deployment. Only business and enterprise Windows 11 devices with Microsoft 365 desktop apps installed will receive the automatic installation.

Automatic installation via Microsoft 365 Apps
On Windows 11 devices running Microsoft 365 Apps on the Office Current Channel, Companion apps are installed automatically as part of the Office update.

From December 2025, this also applies to Windows 11 devices on the Office Monthly Enterprise Channel.

No Intune policy or app assignment is required if devices meet these conditions.

Manual deployment (if required)
If Companion apps are not present, they can be downloaded from the Microsoft 365 Companion apps overview page and deployed using Microsoft Intune or another app management tool.

This is mainly relevant for:

• Locked-down environments
• Delayed update channels
• Test groups or test devices

Where the Copilot User access settings are located

This is a common point of confusion.

The User access page for Copilot is not under the main Microsoft 365 Settings blade.

Correct click path:

Sign in to the Microsoft 365 admin centre
Go to Copilot
Select Settings
Select User access

Inside this page, you control how Copilot and Companion apps surface across user experiences.

If you cannot find User access, ensure you are inside Copilot > Settings, not the global Microsoft 365 Settings menu.

Pinning Microsoft 365 Companion Apps to the Windows taskbar

Pinning Copilot and its Companion apps is strongly recommended. It increases visibility, drives usage, and removes reliance on user-driven customisation.

From the User access page:

Sign in to the Microsoft 365 admin centre
Go to Copilot > Settings > User access
Locate Pin Microsoft 365 Copilot apps to the Windows taskbar
Select the option to pin Copilot and its companion apps to the Windows taskbar
Select Save

This setting applies to:

• Microsoft 365 Copilot
• Windows
• Files
• People
• Calendar

Once enabled, Copilot and Companion apps appear pinned on supported Windows 11 devices without user intervention.

Admin oversight and things to be aware of

Profile data exposure, the People app surfaces organisational data from Microsoft Entra ID. Ensure profile information such as job titles, managers, and departments are accurate. Information governance, the Files app respects existing SharePoint and OneDrive permissions. It does not expose content that users do not already have access to, but poor permission hygiene will still surface here.

Microsoft 365 Companion Apps do not introduce new data risks, but they do make existing ones more visible. That is the real shift administrators need to understand. These apps surface what already exists in your tenant faster and more prominently, which means inaccuracies in profile data or weak permission structures will be noticed sooner by users.

When deployed with intent, Companion Apps strengthen Copilot adoption by giving users clear, reliable context before they ever type a prompt. When deployed without oversight, they can expose gaps in identity hygiene, information architecture, and governance that have been ignored for years.

Treat Companion Apps as an extension of your Copilot rollout, not a side effect of it. Validate identity data, review file permissions, pilot taskbar pinning, and communicate changes clearly. Do that well, and Companion Apps become one of the simplest ways to increase Copilot value across Windows 11 without adding operational overhead.

Copilot answers questions. Companion Apps make sure it is answering the right ones.

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