How to Update MSDTC with Windows Server 2003 MS DTC Hotfix Rollup Packages

The Windows Server 2003 COM+ 1.5 hotfix rollup packages are cumulative. Each package contains all of the fixes that were released in previous rollup packages. Note that the fixes in a COM+ 1.5 rollup includes fixes for both COM+ and MSDTC. The final COM+ 1.5 rollup package is the Windows Server 2003 Post-Service Pack 2 COM+ 1.5 Hotfix Rollup Package 12. Starting with the package 13, Microsoft will release MS DTC hotfix rollup packages that include fixes only for MSDTC. Each package contains all the fixes that were released in the previous MS DTC hotfix rollup package. At the time of this posting there are three MS DTC hotfix rollup packages that have been released:

List of the MS DTC bugs that are fixed in Windows Server 2003 MS DTC Hotfix Rollup Package 13
List of the MS DTC bugs that are fixed in Windows Server 2003 MS DTC Hotfix Rollup Package 14
List of the MS DTC bugs that are fixed in Windows Server 2003 MS DTC Hotfix Rollup Package 15

You can search for rollups at https://support.microsoft.com for the phrase (including the quotes): 

"MS DTC Hotfix Rollup Package"

The following query does this search for you. Choose the latest one:

https://support.microsoft.com/search/default.aspx?query="MS+DTC+Hotfix+Rollup+Package"