Outlook says one thing, the room panel says another

When bookings live in two systems that sync loosely, people stop trusting both — and start double-booking on purpose.

Content reviewed: September 2026

Offision and Microsoft integration cover showing connected workplace productivity tools

Why this happens

Two systems, two sources of truth

Two systems, neither authoritative — they disagree fast.

One source of truth with Microsoft 365 or Google.

How Microsoft 365 connection modes work

One-way sync loses the edits

One-way sync loses reschedules and cancellations.

Changes push back to Outlook and Google.

How room sync from Microsoft 365 works

Room mailboxes accept anything

Room mailboxes bypass your booking rules.

Offision applies quotas and check-in to calendar bookings.

How resource policies apply to calendar bookings

Time zones follow people, not rooms

Cross-region meetings land at the wrong local hour.

Each room anchors to its building time zone.

How buildings and floors anchor room time

Impact

Who pays for this today

The same problem costs each group something different — and they rarely compare notes.

Impact

Employees

They arrive at a room showing someone else's meeting, cannot tell which system is right, and book twice next time.

Professional portrait of an employee with arms crossed, wearing a light pink shirt and glasses on a white background.

Impact

IT

They own the sync and receive the tickets, usually with no log showing which side changed what.

Professional portrait of an IT team member in a navy pinstripe suit holding a laptop that shows a code editor and utilization dashboard on a white background.

Impact

Workplace teams

Their booking policies quietly do not apply to the majority of bookings, because those arrive through the calendar.

Professional portrait of a workplace team leader with arms crossed, wearing a navy pinstripe blazer on a white background.

Common questions

Do employees have to stop using Outlook?

No — that is usually the wrong trade. Offision syncs both ways with Microsoft 365 and Google Workspace, so people keep booking where they already work.

What happens if the same room is booked in both places at once?

With two-way sync there is a single availability record, so the second attempt sees the first and is refused, rather than accepted and reconciled later.

Does calendar sync require single sign-on too?

They are separate. Calendar and resource sync can run before or after you move to Entra ID single sign-on, though many teams do both in one project.

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Next step

See it against your own rooms

Walk through your estate, your booking rules and your calendar setup with our team — or start free and try it on one floor.

Book a demo Start for free

(+852) 5538 3410

Offision is a leading platform for creating connected workspaces, empowering businesses with innovative solutions for digital signage, room booking, visitor management, and more. Our mission is to streamline office workflows, enhance productivity, and foster collaboration through intuitive design and seamless integrations.

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