Reading a colleague’s availability in Outlook’s Scheduling Assistant
The Scheduling Assistant shows when people look busy, but the detail you see comes from their sharing defaults and their own Show As choices. Reading it well avoids double-booking and false alarms. Arte Soft, the developer of Cloud Calendars, explains.
What a free-looking slot can mean
| Situation | What you see | Next step |
|---|---|---|
| Colleague genuinely free | Free | Invite |
| Commitment marked Free | Free | Ask or confirm through replies; a commitment may not be represented |
| Reminder marked Busy | Busy | Ask if the slot is negotiable |
| Low My organization default | Busy blocks without detail | Ask the colleague, or request sharing |
| “We’re checking everyone’s calendars” in classic Outlook | No availability | Ask IT (Microsoft’s registry fix) |
What most people assume
The Scheduling Assistant shows everything on a colleague’s calendar.
What the grid is based on
Microsoft says the Scheduling Assistant and Room Finder are available with Microsoft 365 or Exchange accounts. Add attendees and open Scheduling Assistant to see a row per person. Its documented desktop workflow also offers AutoPick to search for times under selected criteria; menus and automatic suggestions vary by client, so do not assume that exact command exists everywhere.
The visible detail depends on calendar permissions and organisational sharing settings. Microsoft’s classic Outlook on the web guidance describes My organization as the default detail level for people in the organisation or federated organisations in Scheduling Assistant. It also says that opening an unshared colleague’s calendar from the directory uses that default. Those are legacy web instructions; use the current sharing controls available to your account rather than expecting the same label in every client.
Busy is a choice, not a fact
What looks busy depends on Show As. Microsoft says the organizer sets the initial availability for attendees, and each person can change the status on their own calendar afterwards; later changes apply only to their calendar.
So a colleague’s reminder marked Busy blocks the grid, while a real commitment marked Free doesn’t. When it matters, ask.
Colours depend on the client
Microsoft’s Scheduling Assistant page describes busy in dark blue, tentative as a light blue hashed block, and outside working hours in light grey. For new Outlook for Windows, Microsoft says the Busy, Tentative and Working Elsewhere patterns adjust to your selected calendar colour. Read the pattern and legend in your own client rather than relying on a colour.
If colleagues have set work hours and location, Microsoft says their location appears in the Scheduling Assistant too.
When to ask IT
Microsoft documents a classic Outlook/Exchange Online case in which “We’re checking everyone’s calendars” can result from missing FreeBusySupport registry entries after Office installation or reinstallation. That cause must be verified; the error alone does not prove it. The documented repair options are reinstalling Office or restoring the missing entries, with registry backup precautions. Ask IT to diagnose it. Other availability gaps can involve permissions or organisational sharing settings.
Worked example: picking a slot for four
A fictional project lead invites three colleagues and opens the Scheduling Assistant. One row shows 14:00–15:00 busy, another tentative, the third free all afternoon, and AutoPick suggests 15:30.
Before sending, they open the third colleague’s calendar from the directory and see only busy blocks, consistent with a My organization default of availability only. They send the 15:30 invitation and treat replies, not the grid, as the confirmation.
Check: watch responses; if someone declines, return to the grid.
What it looks like
Cloud Calendars overview, using our product images. Provider settings and protocol examples described in this guide are separate from the screens shown here.
What to do
- Add attendees and open Scheduling Assistant. In the documented desktop workflow, try AutoPick if available.
- Read patterns and the legend in your own client.
- Remember busy and free reflect people’s Show As choices.
- Use directory-opened calendars knowing they show the My organization level.
- Treat responses as confirmation; escalate classic-Outlook errors to IT.
Questions
- Why do I see only busy blocks for a colleague?
- Availability-only permission is one possible reason. Microsoft’s classic web guidance describes a My organization default that can provide busy blocks without details. Check the owner’s sharing settings and your organisation’s policy; an empty or unavailable grid can require different checks.
- Why are the colours different from my colleague’s screen?
- Microsoft says new Outlook adjusts the availability patterns to your selected calendar colour.