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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Debug: Graph API throws HTTP 403 with $filter for some users

In recent times, i worked with one of the ISV developer who reported that for some users when they use $filter with Graph API calls throws HTTP 403 – Forbidden. The same call works fine with $filter for most of the users. We chased and found it happens for some users (and not for all…


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…


Get-UserPhoto cmdlet may throw UserPhotoNotFoundException

Based on my last Get-userphoto blogpost, if you run the Exchange Powershell then you may get the following error: Error on proxy command ‘Get-UserPhoto -Identity:’CN=svcadmin,OU=xxxx.onmicrosoft.com,OU=Microsoft Exchange Hosted Organizations,DC=xxxx,DC=xxx,DC=outlook,DC=com” to server xxxx.xxxx.xxx.outlook.com: Server version 15.20.xxxx.0000, Proxy method PSWS: Cmdlet error with following error message: Microsoft.Exchange.Data.Storage.UserPhotoNotFoundException: There is no photo stored here.    at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory,…


Microsoft Office 365–Using Exchange PowerShell to get Users photo from Microsoft Office 365

You can use the Get-UserPhoto cmdlet to view information about the user photos feature that allows users to associate a picture with their account. User photos appear in on-premises and cloud-based client applications, such as Microsoft Outlook Web App (OWA), Lync, Skype for Business, and SharePoint. Please note that, – This cmdlet is available in…


Microsoft Graph REST API Developer – Getting list of locales, languages supported for the user mailbox

Using Microsoft Graph REST API, you can get the list of locales and languages that are supported for the user, as configured on the user’s mailbox server. You need to use OutlookUser resource type, which represents the Outlook services available to a given user. Request:https://graph.microsoft.com/beta/me/outlook/supportedLanguages RequestHeader: Authorization, Bearer/Token is required Response:If successful, this method returns…


EWS : How to access user’s free/busy info programmatically using Exchange Web Services (EWS)?

In this post, we will see how to access user free/busy information programmatically using Exchange Web Services (EWS) – Proxy. Exchange provides such a service by storing what is referred to as free/busy data. This information will indicate what requested time range is free, busy, and tentative for a particular user. It will also provide…