您好，
windows server 2003没有sp3.
您可以查看一下以下文档。
https://technet.microsoft.com/en-us/windowsserver/bb463273.aspx
同时KB3045313适用于SQL Server 2008 R2 Service Pack 2
https://support.microsoft.com/en-us/kb/3045313
关于windows 相对应的更新您都可以在下载中心中查到。
http://www.microsoft.com/en-us/download/
Best Regards，
Mary Dong
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