Since we introduced support for Microsoft’s Lync® 2013 VDI Plug-in (headless media engine) in Citrix Receiver 4.0 last year, we’ve seen rapidly growing customer demand for this optimized solution. There are clear advantages to offloading real-time media processing from the XenDesktop, XenApp or VDI-in-a-Box server to the user device (see my blog post Delivering softphones and UC apps with HDX real-time technologies). As we promised when this technology was released, we have continued to work closely with Microsoft to refine the joint solution. Last week, we released Citrix Receiver 4.1.02  (see which significantly improves the user experience for Lync audio-video users on supported Windows devices. Valuable software improvements have also been introduced by Microsoft (see, for example,

The initial focus of our formal qualification testing with Microsoft has been with VDI workloads (XenDesktop and VDI-in-a-Box). Happily, however, we’ve also confirmed that the technology works well with RDS workloads, specifically XenApp published desktops (minimum release XenApp 6.0). That said, delivery of the Lync 2013 client as a seamless published app does not currently work with the VDI Plug-in; Microsoft encourages customers who want this form of Lync delivery to express their interest to their Microsoft Sales representative for submission via the Lync/Skype Experience Engine at

IT managers deploying this solution should direct users to the Citrix Receiver 4.1.02 download at

We hope you will enjoy the excellent audio-video quality of Lync 2013 delivered via this joint Citrix-Microsoft solution.

Derek Thorslund
Director of Product Management, HDX