[Build 2019] Let’s develop a Microsoft Graph-powered productivity app

As part of Build 2019, i scheduled this Microsoft Graph API related session in my schedule builder – so thought of sharing this one Let’s learn how to use Microsoft Graph to bring together some of the best experiences from Microsoft Teams, Outlook, and SharePoint. In this Level 300 session, you will see how to…

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EWS API throws error “No Mailbox with such GUID”

Recently i was working with an ISV/application developer, who created this custom application using EWS (Exchange Web Services) API. It worked with the account with impersonation rights to access other mailboxes/calendars in Azure/Office 365/Exchange Online. But when they tried to access a specific mailbox calendar, they see the error “No mailbox with such GUID”. We…


Deep dive # 1: How to configure Exchange on-premise Server hybrid integration with Office 365/Azure Infrastructure and test REST API calls?

This is one of the regular discussion that comes across at my desk, how we can configure Hybrid Exchange on-premise server integration with Office 365/Exchange Online, so that users can make use of REST API. So I thought let me stitch all of them together which can be handy for both the Exchange administrators and…

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Graph API : Subscription lifetime changes for Outlook resources

If your application uses user tokens to create subscriptions to Outlook resources, then you need to update your apps as needed to handle this scenario. This only applies to applications that use user tokens to create subscriptions. Applications that use app tokens to create subscriptions are not affected by this change. Existing applications do not…


Microsoft Graph API developer – Using GetSchedule API to get free/busy availability information

Now you can use the GetSchedule API (when I publish this article, its available in /beta endpoint) to get the free/busy availability information for a collection of users, distributions lists, or resources, for a specified time period. You can use it simply by calling, POST /me/calendar/getSchedule POST /users/{id|userPrincipalName}/calendar/getSchedule Let me play with this API call…

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Azure/Office 365 Graph API developer: RefreshToken, AccessToken, IdentityToken

These are 3 common terms (Refresh Token, Access Token, Identity Token) in Azure/Office 365 Graph API Cloud developer world and we get tons of queries on this. So let me try to explain them in simple terms … Access Token:- The access token is attached to every REST API request in the authorization header. -…


Developer Guidance: Which endpoint should i use Microsoft Graph API or Outlook REST API?

With reference to what i blogged earlier, i get similar queries from app developers to choose Microsoft Graph API or Outlook REST API endpoints when they develop application related to Outlook APIs. Microsoft recommends using the Microsoft Graph API whenever possible. – The Microsoft Graph APIs include more features than just Outlook-related APIs, including OneDrive…


Office 365 Devs: Deprecation of Outlook REST API v1.0

As you aware that the Version 1.0 of the Outlook REST API was launched in 2015 to provide API access to mail, calendar, contacts, and other data from Exchange Online. Later we came up with Outlook REST API v2.0 and Microsoft Graph, both of which provide richer features, and better performance and reliability than Outlook…

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Office 365 Developer: Mail, Calendar, Contacts REST APIs and Hybrid Exchange

If you’re an Azure/Office 365 application developer, then this session is for you. In this Office 365 Developer session (as part of Redmond Interoperability Protocols Plugfest 2017), Deepak Singh, Program Manager, delivered presentation on Mail, Calendar, and Contacts REST APIs and Hybrid Exchange. Please make use of it.


Use Microsoft Graph API to reach on-premises, cloud users of hybrid Exchange 2016

As you aware, Office 365 and Exchange Online provide a new way to work with email, calendars, and contacts. The Mail, Calendar, and Contact REST APIs provide a powerful, easy-to-use way to access and manipulate Exchange data. In this video, you will see Venkat, Principal Program Manager lead will walk you through how to use…

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Office 365 Graph Developer : Lets use Microsoft Graph Delta Query…

As you aware that Microsoft Graph provides a single API endpoint that gives you access to rich people-centric data and insights, via a number of resources like users and messages. Many applications need to keep track of what’s changing in these data sets, and we recently added support for delta query across a variety of…


Office 365 Developers – Catch up on Outlook APIs in Microsoft Graph

  In Build 2017, i attended good number of sessions virutally, including this one by Venkat Ayyadevara, Program Manager, Outlook EcoSystem about Outlook API’s in Microsoft Graph. In this, you can learn about recent updates in Microsoft Graph for accessing Outlook mail, calendar, contacts and more for millions of commercial and consumer users. You can…


FYI: Microsoft Exchange Server 2007 & end of support next year…

Yes you heard it right, Microsoft Exchange Server 2007 is approaching the end of support by next year; you can refer the Support lifecycle for it. Customers who are using Exchange Server 2007 for any of their email and calendar services should begin planning to move the associated mailbox data and resources to Office 365…