Download : Microsoft Exchange Server 2019 Public preview

July 24, 2018 we announced the preview build of Exchange Server 2019 and you can download it from here  So you can download, test it, take a look at the Preview and make use of it. For detailed info please refer our EHLO blog post: Hope this helps.


Office.js: MakeEWSRequestAsync throws “The request exceeds the 1 MB size limit. Please modify your EWS request”

One of my customer created Outlook Web add-in (Office.js) and when he calls mailbox.makeEwsRequestAsync method. But they got the following error “The request exceeds the 1 MB size limit. Please modify your EWS request”. At the app level, the developer is making the call from web add-in to create a mail item in drafts folder…

Exchange Server –March 2018 quarterly updates released

The March quarterly release updates for Exchange Server are now available on the download center. We documented the detailed info @ EHLO blog – Hope this helps.

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…


Yay, my MSDN blog listed in a book!!

One of my Exchange/Office 365 developer customer shared this with me – that my MSDN blog (updated blog is is listed in Exchange book along with other star Exchange bloggers/communities.  Wow moment. Thank you so much @John Paul Mueller Written by John Paul Mueller, published by Wiley @ October 2008 and here is the…

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…


MAPI Developer: Download latest MFCMAPI from the Github

As you aware that MFCMAPI provides access to MAPI stores to facilitate investigation of Exchange and Outlook issues and to provide developers with a sample for MAPI development. If you look to download the latest MFCMAPI (x86/x64) then you can get it from the Github @ Hope this helps.

Microsoft Office 365, Exchange Developer : How to include EWS Managed API via NuGet in your Visual Studio solution?

As you aware Exchange Web Services (EWS) Managed API provides a managed interface for developing .NET client applications that use EWS. By using the EWS Managed API, you can access almost all the information stored in an Office 365, Exchange Online, or Exchange Server mailbox – on-premises starting from Microsoft Exchange Server 2007, 2010, 2013,…

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…

Just FYI – Support Ending for the .NET Framework 4, 4.5, 4.5.1 @ January 12, 2016

Last year I blogged regarding the end of support for .Net Frameworks (4, 4,5 & 4.5.1), starting January 12, 2016 and it’s not far away – please there will be no longer provide security updates, technical support or hotfixes for .NET 4, 4.5, and 4.5.1 frameworks. All other framework versions, including 3.5, 4.5.2, 4.6 and…

Download : Microsoft Exchange Server 2016 Preview

Now you can download Microsoft Exchange Server 2016 Preview here – you can install the bits and get hands-on experience with the newest member of the Exchange family. > Initial product documentation available @ TechNet Exchange Server 2016 library > For more detailed information you can refer: Hope this helps.

Calculating file size, free space of any given .PST file with MrMAPI utility

Earlier in my blog, i got the request from one of the MAPI developer to see is there any way we can calculate the file size, free space of any given .PST file. Also he pointed that he can access the PST file using Stephen’s MFCMAPI utility. For this activity, I used Stephen’s another tool…