To ensure that you have the latest version of the Lync client, and the latest update, check out this frequently updated list of all client release versions for Microsoft Lync 2010.

Authors: Akshat Nigam, Microsoft senior Support Engineer and Thomas Binder, Microsoft UC Voice Architect

Editor: Susan S. Bradley

Publication date: March 26, 2013

Updated: April 21, 2014

Product version: Lync 2010

One of the most common checks that we do when troubleshooting Lync client issues is determining whether you are running the latest version of the Lync client and if all patches are installed.

A majority of the Lync client issues that get reported are resolved by upgrading to the latest release or update of the product. Thus, we highly recommended that you install the latest version of the Lync client, along with the latest updates, before you contact Microsoft Product Support. This article will help you identify the correct release version number.

To check the client version, from within the client, navigate to About Microsoft Lync, as shown in Figure 1 below.

Figure 1. Navigating to the About Microsoft Lync option

The version number in Lync 2010 is usually within the brackets on the second line, as shown in Figure 2 below (4.0.7577.4356).

Figure 2. Locating the Lync 2010 version number

Another way to check the client version is to look at the client UCCP log (communicator-uccapi-*.uccapilog) and look at any of the outgoing messages. For example, look at the initial REGISTER sent from the client, as follows:

03/19/2013|17:34:34.489 1EB4:1240 INFO :: REGISTER sip:tailspintoys.com SIP/2.0

Via: SIP/2.0/TLS 172.16.22.242:54486

Max-Forwards: 70

From: <sip:kit@tailspintoys.com>;tag=03a6c3d1d4;epid=7b6e0b7597

To: <sip:kit@tailspintoys.com>

Call-ID: 8a8324eeb0f84c9dbce136bb752e46f3

CSeq: 1 REGISTER

Contact: <sip:172.16.22.242:54486;transport=tls;ms-opaque=9359f8b23d>;methods="INVITE, MESSAGE, INFO, OPTIONS, BYE, CANCEL, NOTIFY, ACK, REFER, BENOTIFY";proxy=replace;+sip.instance="<urn:uuid:13DD5A72-ED31-5804-8CB4-861885BF1564>"

User-Agent: UCCAPI/4.0.7577.4356 OC/4.0.7577.4356 (Microsoft Lync 2010)

Supported: gruu-10, adhoclist, msrtc-event-categories

Supported: ms-forking

Supported: ms-cluster-failover

Supported: ms-userservices-state-notification

ms-keep-alive: UAC;hop-hop=yes

Event: registration

Content-Length: 0

Now that you have a number, how do you know which release is running on the client?

Each update (all Lync updates are cumulative updates) that is released by Microsoft for Lync has its own version number. You can determine the version number associated with an update by looking at the related KB article and noting the version of 'Lync.exe' in the File Information section, near the end of the article.

For quick reference, the following table lists the versions, release month, year, and a link to the KB article for all Lync 2010 updates released through March 2013.

Version

Release Month, Year

Link to KB Article

4.0.7577.0

RTM version

NA

4.0.7577.0108

January, 2011

http://support.microsoft.com/?kbid=2467763

4.0.4577.0253

April, 2011

http://support.microsoft.com/?kbid=2496325

4.0.7577.0314

July, 2011

http://support.microsoft.com/?kbid=2571543

4.0.7577.0330

September, 2011

http://support.microsoft.com/?kbid=2624907

4.0.7577.0336

October, 2011

http://support.microsoft.com/?kbid=2630294

4.0.7577.4051

November, 2011

http://support.microsoft.com/?kbid=2514982

4.0.7577.4053

November, 2011

http://support.microsoft.com/?kbid=2647415

4.0.7577.4061

January, 2012

http://support.microsoft.com/kb/2670498

4.0.7577.4064

February, 2012

http://support.microsoft.com/kb/2669896

4.0.7577.4072

February, 2012

http://support.microsoft.com/kb/2670326

4.0.7577.4087

March, 2012

http://support.microsoft.com/kb/2684739

4.0.7577.4098

June, 2012

http://support.microsoft.com/kb/2693282

4.0.7577.4103

June, 2012

http://support.microsoft.com/kb/2701664

4.0.7577.4109

October, 2012

http://support.microsoft.com/kb/2726382

4.0.7577.4356

October, 2012

http://support.microsoft.com/kb/2737155

4.0.7577.4374

January, 2013

http://support.microsoft.com/kb/2793351

4.0.7577.4378

March, 2013

http://support.microsoft.com/kb/2791382

4.0.7577.4384

April, 2013

http://support.microsoft.com/kb/2815347

4.0.7577.4409

October, 2013

http://support.microsoft.com/kb/2884632

4.0.7577.4419 January, 2014 http://support.microsoft.com/kb/2912208

4.0.7577.4445

April, 2014 http://support.microsoft.com/kb/2953593

 

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Keywords: Lync 2010, Lync 2010 Release Versions, Lync 2010 Cumulative Updates