Office 365 and new Outlook simplified ribbon

Well, if you’re using Outlook for a while, then you will be familiar with Outlook ribbon – contains all of the options and commands that you use to accomplish tasks in Outlook. For example, you can click buttons on the ribbon to create a new email, delete emails, open a new meeting request, or assign…


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…


Developer: Office Add-ins community call @ April 10, 2019

The Office Add-ins community call is our monthly event for developers to connect in real-time with the folks who are building the Office JavaScript APIs. We’ll share updates about new Office JavaScript APIs, provide tips about useful tools, samples, and resources for developing Office Add-ins, and feature a technical deep dive on a specific topic….

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ASP.NET MVC5, Azure Security Center, and More on This Week’s Friday Five!

Optimize Security and Compliancy with #Azure Security Center  James van den Berg has been working in ICT with Microsoft Technology since 1987. He works for the largest educational institution in Netherlands as an ICT Specialist, managing datacenters for students. He’s proud to have been a Cloud and Datacenter Management since 2011, and a Microsoft Azure…


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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Microsoft Graph API’s Beta version, developer guidance, support

Microsoft Graph API’s beta version, You need to be aware that beta version contains features that are currently in preview. You’re invited to try these APIs. Beta version is exposed under https://graph.microsoft.com/beta How to find if the feature is in beta or not, When you open the Graph API documentation, you will see the following…

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Graph API Developer–Programmatically get the Outlook categories defined for the user using Graph API

Well, we use Outlook/Office 365 a lot and sure most of them uses Categories. Traditionally, you might have used MAPI/Outlook Object Model/EWS API to retrieve these categories. This time, lets we use Microsoft Graph API to programmatically get the Outlook categories that have been defined for the user. First i make the Request: GET https://graph.microsoft.com/v1.0/me/outlook/masterCategories…

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