Released: February 2019 Quarterly Exchange Updates

Today we are announcing the availability of quarterly servicing updates, cumulative and update rollups, for all supported versions of Exchange Server. Exchange Server 2010, 2013, 2016 and 2019 all receive an update package. These updates include important fixes to address vulnerabilities being discussed in blogs and other social media outlets. While it is not the…


Exchange Server 2010 End of Support is (Still) Coming

In April 2018 we blogged about the coming End of Support date for Exchange Server 2010. It’s time for another reminder, but today’s post is extra special. Why? One year from today Exchange Server 2010 will no longer be supported. What does ‘end of support’ mean? Exchange Server, like almost all Microsoft products, has a…


Released: June 2018 Quarterly Exchange Updates

The latest cumulative updates for Exchange Server 2016 and Exchange Server 2013 are now available on the download center. An update rollup for Exchange Server 2010 is also available. The updates released today include important changes to the pre-requisites required to install Exchange Server. The installation packages include fixes to customer reported issues, all previously…


Exchange Server TLS guidance Part 3: Turning Off TLS 1.0/1.1

Overview In part 3 of our Exchange Server TLS Guidance series, we introduce how to turn off TLS 1.0 and 1.1 in your Exchange Server deployment. Turning off TLS 1.0 and 1.1 can be a highly disruptive event if not planned and executed properly. The Exchange team believes that it is time for the ecosystem…


Exchange Server TLS guidance Part 2: Enabling TLS 1.2 and Identifying Clients Not Using It

Overview In part 2 of our Exchange Server TLS Guidance series we focus on enabling and confirming TLS 1.2 can be used by your Exchange Servers for incoming and outgoing connections, as well as identifying any incoming connection which is not utilizing TLS 1.2. The ability to identify these incoming connections will vary by Windows…


Demystifying Hybrid Free/Busy: Finding errors and troubleshooting

In this second part of the Demystifying Hybrid Free/Busy, we will cover troubleshooting of Hybrid Free/Busy scenarios, more specifically – how and where to find an actual error that will indicate where the problem is. Before venturing forth, please make sure that you have seen Part 1 of this demystifying series! Here is the graphics…


An Update on Office 365 Requiring TLS 1.2

Hello Exchange Server followers! In December 2017 it was announced Office 365 planned to discontinue support for TLS 1.0 and TLS 1.1 connections on March 1st, 2018, and after that time only TLS 1.2 connections would be allowed when interacting with Office 365. Many of you have been asking for additional detail on what this…


Demystifying Hybrid Free/Busy: what are the moving parts?

Hybrid Free/Busy is one of those things that many people do not fully understand. If everything works well, the complexity is hidden from view and people working in various parts of organization can seamlessly work together. But if things go wrong… you will appreciate deeper understanding of what makes it work. This is why we…


Exchange Server TLS guidance, part 1: Getting Ready for TLS 1.2

Update: With the Office 365 deadline to have TLS 1.2 enabled being moved from March 2018 to October 2018 we have changed the timing of subsequent post releases; please see below! Overview As the realm of security in technology continues to evolve over time, every so often we say hello to newer and more competent…