Exchange Server Quarterly Servicing updates, changes, zero day vulnerability fixes released

Yesterday we released Exchange Server quarterly servicing Cumulative Updates (for Exchange 2013/2016/2019) and Rollup Update (for Exchange 2010) for all supported versions of Exchange Server. Few highlights were, These updates have the fixes to mitigate the zero day and related vulnerabilities. An architectural change to EWS Push notification authentication – this change addresses the EWS…

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Debug EWS subscription error – You have exceeded the available subscriptions for your account

Recently i was investigating an issue reported by an app developer. They created a custom EWS (Exchange Web Services) application which tries to open streaming subscription to Exchange Server 2013 using EWS. It worked fine for a while and later they noticed the following error: You have exceeded the available subscriptions for your account. Remove…

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Feature comparison: EWS vs. EWS Managed API

Are you a .Net Developer who develop custom application using Exchange Web Services (EWS) Managed API or EWS (Auto-generated proxies)? Then this is for you. The EWS Managed API provides an intuitive interface for developing client applications that use EWS. The API enables unified access to Exchange resources, while using Outlook–compatible business logic. In short,…

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Developer Webcasts on Exchange Server 2010 programming

Please find the developer webcasts for Exchange Server 2010. If you’re planning to create your own custom application using Exchange Server 2010, i would recommend you to start from this. Exchange Server 2010 Development (Part 1 of 6): Migrating Applications to Exchange Web Services In this Webcast, Jason Henderson gives an overview of what to…


Comprehensive guide: Windows Phone development resources

Looking for a comprehensive guide to development resources for Windows Phone? Visit the Windows Phone developer resources pages on App Hub. Please find the following topic pages so you can learn everything you need to know to create great apps and games for Windows Phone: Silverlight for Windows Phone XNA Game Studio and XNA Framework…