Developer's DescriptionBy MicrosoftUpdate Microsoft Office 2007 for improved security, stability, and performance.The 2007 Microsoft Office suites Service Pack 1 (SP1) contains significant security improvements, stability improvements, and performance improvements. Some fixes that are included with the 2007 Microsoft Office suites SP1 were previously released in separate updates. The 2007 Microsoft Office suites SP1 combines the previously released fixes into one update.