It's very important to be able to filter members of a group, for example to search for employees within an organization by name (e.g. 'startsWith').

We are integrating Microsoft Teams threaded chat into our product offering. Our users will interact with the channel-based chat using both the Microsoft Teams application and from within our application. To avoid polling, we would like to be able to subscribe to Microsoft Teams related events. Of interest are events related to new channel messages. We found similar subscriptions for files and email, but nothing related to Microsoft Teams.

See documentation for /subscription endpoints, Change notifications: "Use the Microsoft Graph API to get change notifications"

Support @mention data when posting new chat messages using the Microsoft Graph API. The Microsoft Teams user interface allows for this, but the Microsoft Graph API endpoints remove @mention metadata and markup from new messages. We observed this using the POST /teams/{id}/channels/{id}/chatthreads endpoint, but it might affect other endpoints also.

The same functionality should be added to the endpoint for replying to threads once it is developed.

The call to get a Team Channel information `https://graph.microsoft.com/beta/teams/{team-id}/channels/{channel-id}` gives us no reference to access the channel files.
I propose allowing `/drive` to be added to the end to access the location in SharePoint

The customer wants O365 Teams to support webhook so it can push events to 3rd party security vendors to perform the real-time inspection on the team persistent chat in Teams.

Here's the document about Team:
https://docs.microsoft.com/en-us/graph/api/resources/teams-api-overview?view=graph-rest-1.0

Currently you cannot post messages to Teams with application permissions, only delegated permissions are supported.

To provide personal dashboards which include more information than Teams or portal.office.com landing page gives, we should be able to read all feed/notification information via Graph API.

At the moment it is not possible to get a list of groups that user can access. Getting the full list of groups (including private) is quite useless.

In order to, for example, filter users by a certain skill you cannot do only one REST call now.

From stackexchange:

"Filter on collection type properties is represented as below:

https://graph.microsoft.com/v1.0/users?$filter=skills/any(c:c eq 'Javascript')

However, filter on skills property is currently not supported. You can place a request in uservoice site."

I would like support for this /any command, specifically for skills but for all queries would be great too.

It is currently not possible to set the value of a Managed Metadata column on a SharePoint item using the Graph API.

Support for setting values on all standard SharePoint columns types is essential in the Graph API to drive adoption of this API. The following column types are currently not supported and have been raised in other UserVoice requests:

Picture and Hyperlink columns:
https://officespdev.uservoice.com/forums/224641-feature-requests-and-feedback/suggestions/32827402-support-for-sharepoint-hyperlink-or-picture-field

Lookup Item in List columns:
https://officespdev.uservoice.com/forums/224641-feature-requests-and-feedback/suggestions/32293726-support-sharepoint-lookup-fields-when-creating-lis

People & Groups columns:
https://officespdev.uservoice.com/forums/224641-feature-requests-and-feedback/suggestions/32410633-support-writing-to-personorgroup-columns

I am looking for the following equivalent: https://msdn.microsoft.com/en-us/library/office/dn641959(v=exchg.150).aspx - "How to: Add and remove delegates by using EWS in Exchange". (delegating access to calendar / mails /... is quite common in company settings)

Currently there is support for startsWith and eq filters on proxyAddresses. However there is no way to search for proxyAddresses that endsWith or contains a string. E.g. finding users with a proxyAddress in a specific domain.

$filter=proxyAddresses/any(x:endsWith(x,'@acme.com'))

See this thread for more information: https://stackoverflow.com/questions/46588870/filtering-on-proxyaddresses-with-microsoft-graph-api-that-endswith-or-contains-a

EWS / Outlook API non rest support the ability to request Free/Busy information about users. But in O365 REST APIs this functionality has been removed.

I know that Microsoft Graph / O365 API support suggestMeetingTimes which is helpful but when it comes to writing a scheduling application which contains displaying time slot information its nice to be able to get the general free-busy information.

It can be done through retrieving each users calendarView but in general its not necessary to see the entire meeting detail, but rather whether the person is free or busy during a time period.

Planner tasks, buckets and plans are apparently not accessible using client credentials flow (app only).

I can access them using code flow authentication, but that's not my requirement (internal web service).

Everything else seems to work - it's just the planner stuff that doesn't (401 unauthorized).

Is there a workaround that doesn't require a user to log in?

We need the App Authentication model to be able to retrieve conversations for unified groups. This isn't a user specific call so I'm unsure why it's not currently possible?

Right now you cannot achieve "conversations" view in a mail folder using REST API with one request.

A workaround can be found here http://stackoverflow.com/questions/41161515/best-way-to-achieve-conversation-view-for-mail-folder-using-outlook-rest-api

but it is quite slow and not very efficient. Conversations view is the primary view of many mail client but is not achivable (easily) with REST API

Office 365 shared mailboxes are very useful. Unfortunately, they do not load outlook web add-ins right now: see http://stackoverflow.com/questions/35059067/make-outlook-add-ins-working-with-office-365-shared-mailboxes/35065215
This would be terrific to have add-ins for such mailboxes especially for all CRMs related apps

Currently, the requiredAttendees methods setAsync and getAsync have serious issues when resources of room type are used. I will add below my review of the three methods exposed on requiredAttendees object (picture in the link):

http://s17.postimg.org/satnvyrz3/Required_Attendees_Calls_Behavior.png

Need a Change Tracking API in Word.