On December 19, 2011, Microsoft released SQL Server 2008 R2 SP1 Cumulative Update 4 (CU4), which is Build 10.50.2796. I count 52 fixes in the fix list for this Cumulative Update, which is an unusually high number for a CU. Keep in mind that this CU is only for SQL Server 2008 R2 Service Pack 1. If you are still on the RTM branch, you will have to install SQL Server 2008 R2 Service Pack 1 before you install this CU. It also will not work on any build of SQL Server 2008 (which is an earlier “major” version of SQL Server).

Here are lists of the SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 was released, and the SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 Service Pack 1 was released.   My little SQL Server 2008 R2 Build List below might also be helpful.

– SQL Server 2008 R2 Builds                                SQL Server 2008 R2 SP1 Builds
– Build                   Description                               Build                Description
– 10.50.1092        August 2009 CTP2       
– 10.50.1352        November 2009 CTP3
– 10.50.1450        Release Candidate
– 10.50.1600        RTM
– 10.50.1702        RTM CU1
– 10.50.1720        RTM CU2
– 10.50.1734        RTM CU3
– 10.50.1746        RTM CU4
– 10.50.1753        RTM CU5
– 10.50.1765        RTM CU6               —>            10.50.2500      SP1 RTM
– 10.50.1777        RTM CU7
– 10.50.1797        RTM CU8               —>            10.50.2769      SP1 CU1
– 10.50.1804        RTM CU9               —>            10.50.2772      SP1 CU2
– 10.50.1807        RTM CU10            —>            10.50.2789      SP1 CU3
– 10.50.1809        RTM CU11            —>            10.50.2796      SP1 CU4       

Filed under: Microsoft, SQL Server 2008 R2 Tagged: SQL Server 2008 R2 SP1 CU4