Add Offision to Outlook
Add and open the Offision app in the Outlook sidebar rail, learn which Outlook clients support it, and see how it replaces the legacy ribbon add-in.
In Outlook, Offision runs as a dedicated app tab in the left sidebar rail alongside Mail and Calendar. It uses the same Microsoft 365 app package as the Microsoft Teams app, so allowing it in your tenant makes it available in both Outlook and Teams.
1. Find and add Offision in Outlook
In Outlook, select Apps in the sidebar rail and search for Offision.

Search for Offision under Apps in Outlook.
Open the Offision listing and select Add.

The Offision listing in Outlook when installation is restricted by an administrator.
If Add is greyed out or displays “Your organization has prevented this agent from being installed”, ask your Microsoft 365 administrator to allow the app. The administrator steps are identical to those in Add Offision to Microsoft Teams.
2. Sign in to your account
The first time you open the Offision tab, sign in with your work email address (see Sign in to Offision). After you sign in once, the tab opens directly to your Offision home screen.

Offision open as a tab in Outlook.
Differences when using Offision inside Outlook
Because Outlook hosts Offision in an embedded app frame, two behaviours differ from the browser version:
- Location check-in is not supported: Outlook does not share device GPS coordinates with embedded tabs. If a room requires location check-in, use a web browser or the Offision mobile app instead (see Check in by QR code and GPS).
- Theme follows Outlook: Offision automatically matches Outlook’s light or dark theme.
All other features work the same as in a web browser.
Legacy Outlook ribbon add-in removed
Earlier versions of Offision placed buttons (Room booking, Room finder, Desk booking) on the Outlook meeting composer ribbon. That legacy add-in has been retired and replaced by the full Offision app tab in the Outlook sidebar. Create and manage all bookings directly inside the Offision tab rather than from the Outlook meeting ribbon.
Supported Outlook clients
The Apps sidebar rail is supported in Outlook on Windows and Outlook on the web, but is not available in Outlook for Mac. On macOS, open Outlook on the web in a browser to use the Offision tab, or use the standalone Offision web, desktop, or mobile apps (see Where you can use Offision).

