MSCRM 2011 Build numbers

To determine your current build number from the IE web client, simply:

1. Browse to your CRM 2011 website
2. Click on the File tab
3. Navigate to Help
4. Click on “About Microsoft Dynamics CRM”

To determine your current build number from the Outlook CRM client:

1. Open Outlook with the CRM Client installed
2. Click on the File tab
3. Click on the CRM side tab
4. Click on the “About Microsoft Dynamics CRM”  button

See below for a chart of the Dynamics CRM 2011 build versions.  I’ll try to keep it current, so be sure to bookmark and check back later!

Version	Release Date	Build Number	KB Article
Release Candidate		5.0.9688.53	2461082
Beta (On Premise)		5.0.9585.106
Beta (Online)		5.0.9585.107
RTM	February 16, 2011	5.0.9688.583	Download RTM
Update Rollup 1	April 7, 2011	5.0.9688.1045	2466084
Update Rollup 2	June 2, 2011	5.0.9688.1155	2466086
Update Rollup 3	July 28, 2011	5.0.9688.1244	2547347
Update Rollup 4	September 22, 2011	5.0.9688.1450	2556167
Update Rollup 5	October 25, 2011	5.0.9688.1533	2567454
Update Rollup 6	January 20, 2012	5.0.9690.1992	2600640
Update Rollup 7	March 22, 2012	5.0.9690.2165	2600643
Update Rollup 8	May 3, 2012	5.0.9690.2243	2600644
Update Rollup 9	Not released because of delay in the Q2 Service Update
Update Rollup 10	August 16, 2012	5.0. 9690.2730	2710577
Update Rollup 11	October 11, 2012	5.0.9690.2835	2739504
Update Rollup 12	Jan 7, 2013	5.0. 9690.3236	2795627
Update Rollup 13	March 26, 2013	5.00.9690.3448	2791312

 ref Url:
http://crmdynamo.com/2011/09/crm-2011-update-rollup-release-build-numbers-and-how-to-find-them/