Microsoft 365 Business and Enterprise accounts require IT admin approval before connecting third-party calendar apps. This page explains what to do and what Whenn accesses.
Copy the message below and send it to your IT admin or helpdesk. It includes everything they need — what Whenn does, what data it accesses, and compliance credentials. If you've already attempted to connect your calendar through Whenn and hit a block screen, Microsoft will also have automatically sent your IT admin an approval request they can action directly.
Whenn is a group meeting scheduling tool that coordinates availability across organisations. It reads calendar free/busy data from participants, finds a time that works for everyone, and sends calendar invites automatically. It is used to schedule meetings where participants come from multiple different organisations — such as interviews, client meetings, or speaker briefings.
Read-only access to free/busy time blocks only. Whenn never reads event titles, attendee names, meeting descriptions, locations, or any other event content.
Read/write access. Read portion is identical to participants — free/busy only. Write access is required to create the confirmed calendar event in the organiser’s calendar, and to generate a Microsoft Teams meeting link when requested. Whenn never modifies or reads the content of existing calendar events.
Permissions are delegated — acting on behalf of the individual user who connected their account, not the organisation as a whole.
The fastest and most reliable method: click the button below while signed in as a Microsoft 365 admin. This grants Whenn approval for your entire organisation in one step — no navigation through the admin centre required.
Approve Whenn for your organisation →You must be signed into a Microsoft admin account for your organisation when clicking this link. Once approved, all colleagues can connect their Microsoft calendar to Whenn without requiring individual approval each time.
Alternatively, if a user in your organisation has already attempted to connect to Whenn and received a “needs admin approval” screen, Microsoft may have sent you an admin consent request email — you can approve directly from that email.
Most standard Google Workspace configurations allow users to connect Whenn directly without IT admin approval — this is different from Microsoft’s default behaviour.
If your organisation has restricted third-party app access, a Google Workspace admin can approve Whenn via the Google Admin console under Security → API Controls → App Access Control.
Questions? privacy@meetwhenn.com · security@meetwhenn.com