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Anatomy of a SIP Domain Change


Mergers, acquisitions, and branding initiatives usually necessitate a significant but poorly understood change to a Lync Server deployment: a change to the domain name used in the Lync user SIP address (the right-hand-side of the @ sign).

Making this change in a way that minimizes user disruption is a challenge. This blog post aims to provide additional insight and guidance on the user impact, the process to follow, and what changes are required to your infrastructure.

It was written for Lync Server 2010, but all of it should be applicable to Lync Server 2013 (as far as I know).

This post focuses on changing the SIP domain portion of . . . → Read More: Anatomy of a SIP Domain Change

A Fix for the Lync 2010 Control Panel Crash Issue on VMWare

For those living with the annoying issue of the Lync Server 2010 Control Panel crashing on a VMWare image, a fix has quietly been released in the form of a new update to Silverlight (which was the underlying cause).

The original issue was caused by a Silverlight 5.x update (specifically Silverlight 5.1.10411.0) and the only workaround was to rollback to Silverlight 4.x. This was annoying when updates applied to the image re-upgraded Silverlight to the 5.1 version and the issue surfaced again.

On March 12, 2013 Microsoft released an update to Silverlight 5: see MS13-022: Vulnerability in Silverlight could allow remote code execution.

This updates Silverlight to be 5.1.20125.0 and . . . → Read More: A Fix for the Lync 2010 Control Panel Crash Issue on VMWare

Lync Server 2010 Updates for March 2012

In case you missed it, new updates were recently released for the Lync 2010 client and server.

Lync 2010 Client

Knowledge base article and download links: Description of the update for Lync 2010: March 2012.

One significant fix was for a situation where instant messaging history was not being stored in the default Exchange mailbox.

This update represents represents version 4.0.7577.4087.  The last update (Feb 2012) was .4072.

Lync 2010 Server

Knowledge base article and download links: Updates for Lync Server 2010.

Two noteworthy issues that are addressed:

An update to the mobility service that “improves the reliability, stability and performance of Lync Server 2010, Mobility Service” (http://support.microsoft.com/kb/2689850). A . . . → Read More: Lync Server 2010 Updates for March 2012

Lync Server CU5 (February 2012) Released

A quick post in case you missed it, the Lync 2010 server Cumulative Update 5 (CU5) has been released. This update includes client (include mobile) updates as well as server updates.


March 19, 2012 Update: The CU5 update for the Lync for iPhone and Lync for iPad apps have been released on the Apple Store.

iPhone : http://itunes.apple.com/us/app/microsoft-lync-2010-for-iphone/id484293461?mt=8 iPad : http://itunes.apple.com/us/app/microsoft-lync-2010-for-ipad/id484222449?mt=8

This iOS update enables the Lync clients to sign-in using Forefront UAG 2010 SP1 as a Reverse Proxy.


This includes fixes for most major Lync server 2010 roles including the administrative tools, the core components, and the mobility service.

Download: http://www.microsoft.com/download/en/details.aspx?id=11551 Knowledge Base Article . . . → Read More: Lync February 2012 Updates are Available

Microsoft Lync Server Top Solutions RSS Feed

I normally don’t re-post these types of updates, but in case you haven’t read NextHop in awhile, there is a great RSS feed you should follow for Lync – the Microsoft Lync Server Top Solutions RSS Feed.

As explained on this NextHop announcement this feed serves up the top Lync Server solutions that Microsoft engineers use to resolve their top customer support issues with Lync.

A quick look alerted me to a potential issue and associated hotfix involving the Public IM feature for Communicator 2007 R2 users logged on to a Lync 2010 Server: An update is available to clean up the bad state information of a user who uses . . . → Read More: Microsoft Lync Server Top Solutions RSS Feed

December 2011 Updates for Microsoft Lync Server

In mid-December 2011, Microsoft released an update for Lync Server 2010. This flew under the radar for many people, including myself, because the update is distributed under the same knowledge base article (KB 2493736) and download link as the previous November 2011 CU4 update.

This was done to ensure that a couple of post-CU4 updates made their way into the current Windows Update cycle instead of having to wait until next quarter. Note, this December update shouldn’t be confused with a small re-release of the November CU4 update that happened in early December (a missed standalone MSP was added).

The December 2011 update includes updates to the Front-End, Core Components, . . . → Read More: December 2011 Updates for Microsoft Lync Server

Lync 2010 Mobility Service and Documentation Available

Note – this blog post is being continually updated, so check back often.

The Server Pieces

Microsoft has released the server-side components and accompanying documentation to support the new Lync Mobile Clients that are coming out soon:

Server-side Components: Microsoft Lync Server 2010 Mobility Service and Microsoft Lync Server 2010 Autodiscover Service Documentation Download: Microsoft Lync Server 2010 Mobility Guide

There is also excellent TechNet documentation available for Planning, Deploying, and Monitoring mobile:

Planning for Mobility Deploying Mobility Monitoring Mobility for Performance

These server-side components, plus the additional infrastructure changes, will enable your Lync 2010 deployment to support the new Lync Mobility client for the iPhone, iPad, Android, Windows Phone . . . → Read More: Lync 2010 Mobility Service and Documentation Available

Lync Client and Server Cumulative Update Package (CU4)

The latest Lync Client and Server update (as of December 6, 2011) was released a couple of weeks ago and is called Cumulative Update (aka ‘CU4’). I finally had a chance to read about it and install it.

It can be downloaded here: http://www.microsoft.com/download/en/details.aspx?&id=11551. The associated knowledge base article is here: http://support.microsoft.com/kb/2493736

Note: this udpate is referred to as the “Cumulative update for Lync Server 2010: November 2011” in the mobility documentation.

Server Updates

In addition to many fixes, as it has been reported, CU4 on the server-side is significant because that it contains updates that partially readies the server for the new Lync mobility functionality and clients that are . . . → Read More: Lync Client and Server Cumulative Update Package (CU4)

Lync Updates Available on Microsoft Update

Several people have inquired about this in the past.

Today, the Microsoft Lync team officially announced that both the Microsoft Lync Client and Server Updates are Available on Microsoft Update. They also acknowledged that this is the first time, which explains why the previous updates, such as January 2011, were not available.

The April updates should be available as of today.

You can read more about it here: http://blogs.technet.com/b/nexthop/archive/2011/05/09/lync-updates-available-on-microsoft-update.aspx.