This article was previously published under Q321233
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Service packs are the means by which Microsoft distributes bug fixes. Service packs keep a product current. Service packs include updates and may include system administration tools, drivers, and additional components, which are conveniently bundled for easy downloading. Service packs are cumulative; each new service pack contains all the fixes that are in previous service packs, as well as any new fixes. You do not need to install a previous service pack before you install the latest one.
Service Pack 1a Rollup
Release Date: April 25, 2002
How to Obtain
The SP1a rollup is available from the following Microsoft Web site: