SQL Server 2005 Service Pack 3 through Microsoft Update now supports clustering

Starting today March 24 2009, customers will now be able to install SQL Server 2005 SP3 through MU on their clustered SQL Servers.

More information available in the link below:
https://blogs.msdn.com/petersad/archive/2009/03/24/sql-server-2005-sp3-through-microsoft-update-now-supports-clustering.aspx

Thank you,
Christina Gendrano
Program Manager
SQL Server Sustained Engineering