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The official Microsoft blog for Exchange developers

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  • Blog Post: Managing user consent for applications using Office 365 APIs

    Now that the new Office 365 APIs are available in preview and ready for you to build exciting applications, you might wonder how these applications can be managed. There are several aspects to managing applications that are built by using the Microsoft Azure Active Directory (AAD) OAuth2 framework...
  • Blog Post: Enabling Microsoft Azure portal access to manage applications using the OAuth2 protocol

    In my previous post about OAuth2 access to Calendar, Contact and Mail APIs I explained that applications need to be registered and configured in Microsoft Azure Active Directory (AAD). Furthermore, administrators for Office 365 organizations use Microsoft Azure Active Directory to manage OAuth2-enabled...
  • Blog Post: Using OAuth2 to access Calendar, Contact and Mail API in Office 365 Exchange Online

    I am excited to announce that finally EWS in Exchange Online as part of Office 365 exposes a RESTful API for Calendar, Contact and Mail that uses OAuth2 for authorization. In this blog I want to briefly describe Exchange's underlying OAuth2 implementation and how to use OAuth2 to access the new Calendar...
  • Blog Post: What’s new in Exchange 2013 SP1

    You might have heard the news that Exchange 2013 Service Pack 1 (SP1) and the EWS Managed API 2.1 are now available. And you might be asking, what does that mean for me – and more importantly, what does that mean for my applications? Here's the low down. For the Exchange 2013 SP1 release: ...
  • Blog Post: Hot off the press! Synchronization and Notifications in Exchange Online and Exchange 2013

    Last week, we added the following new content to the Exchange Online and Exchange 2013 development section on MSDN: Notification subscriptions, mailbox events, and EWS in Exchange Mailbox synchronization and EWS in Exchange This includes information about the affinity scenario for notifications...
  • Blog Post: Get Into Programming with Exchange Online as part of Office 365

    Microsoft Exchange Online as part of Microsoft Office 365 provides many of the same app-development capabilities that are available for Microsoft Exchange Server running on-site. The Exchange Developer Documentation team is pleased to announce the release of a new Exchange Online Developer Center page...
  • Blog Post: Throttling Policies and the EWSFindCountLimit

    One of my favorite Exchange Web Services (EWS) methods is FindItem , primarily because it was the first Web method I wrote when I joined the EWS team long, long ago. Since then, it has undergone lots of optimizations, feature changes, and so on, to make it what it is today. One of the Exchange 2010 changes...
  • Blog Post: Throttling Policies and CPUStartPercent

    Throttling policies have this funny parameter called CPUStartPercent . This parameter defines the starting CPU use percentage at which Exchange will begin delaying inbound requests. EWS, Exchange Active Sync, POP and IMAP honor the CPU Start Percent value in Microsoft Exchange Server 2010. Three (no...
  • Blog Post: Budget Snapshots in the IIS Logs

    A few components (Outlook Web App, EAS, and EWS) log budget snapshot information to the IIS logs. EWS, notably, includes both a start and an end snapshot. Here is an example of an IIS log entry for EWS (lines are broken up to make it more readable): 2010-03-09 15:15:12 XX.XXX.XX.X POST /ews/Exchange...
  • Blog Post: Learn about the Exchange Web Services Managed API and how Exchange is getting “Cloud Ready” at PDC’08

    Those of you who have already made plans to catch PDC ’08 in L.A. at the end of October be sure to catch the Exchange Web Services Managed API: Unified Communications Development for Exchange session . This exciting talk will be the coming out party for the managed API; it will be the first time that...
  • Blog Post: Exchange Web Services Update Rollup 4 Roundup

    We have just released update rollup 4 (RU4) for Exchange 2007 SP1 . This rollup fixes some bugs in Exchange Web Services (EWS), and introduces some behavior changes to EWS to allow customers and partners the flexibility to accomplish some key scenarios. If you have written code against Exchange Web Services...
  • Blog Post: New and improved - We updated the TechReady 2007 Talk article download

    If you downloaded the code samples for the Exchange Server Developer Center article TechReady 2007 Talk: Developing With Exchange Web Services , you probably had some problems building the projects, because some of the files didn't make it into the download packages. We've corrected that and the updated...
  • Blog Post: Using SQL Server Table-Valued User-defined Functions with Exchange Web Services

    A just-posted technical article by Jim Kleewein and Ray Dixon describes how to combine the SQL Server Tables and Exchange Web Services to access your Microsoft® Exchange Server 2007 Inbox data from Microsoft SQL Server™ 2005. This cool integration enables you to provide data from both Microsoft Exchange...
  • Blog Post: Searching for your search folders?

    Search folders in Exchange are a very powerful tool, but there is one quirk that often hangs developers up when they try to use them: “How do you create a search folder that can be seen in Outlook?”. Creating a search folder that is viewable in Outlook is important because it allows you to debug your...
  • Blog Post: When FindItem won't get what GetItem has!

    Okay, all you Exchange Web Services programmers out there. Since probably half of you have asked this question already, let me save the other half from half a day of half insanity trying to figure it out. The question in question? “Where the @#$($ is the message Body?” When you’re using Exchange Web...
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