What are the latest service packs for Excel?
Microsoft will, from time to time, publish service packs to the Microsoft Office suite. These service packs address a variety of issues including resolutions to known issues. Event 1 Software strongly recommends keeping current on the latest service packs and updates that are available for Microsoft Office as well as your Windows operating system.
The following listing identifies the latest service pack that is available for each version of Excel as of March 2012: