Microsoft Java Virtual Machine

The initial release of Windows XP in 2001 did not ship with a Java virtual machine, because of the settlement with Sun. The settlement required people who wanted to run Java Applets in Internet Explorer to download and install either the standard Sun Java virtual machine, or to download a copy of the Microsoft Java virtual machine.

Service Pack 1 (SP1) for Windows XP was released on September 9, 2002. It contained post-RTM security fixes and hot-fixes, compatibility updates, optional .NET Framework support, and enabled technologies for new devices such as Tablet PCs. It also included the Microsoft Java virtual machine. On February 3, 2003, Microsoft re-released Service Pack 1 (SP1) as Service Pack 1a (SP1a). This release removed Microsoft's Java virtual machine in compliance with the lawsuit with Sun Microsystems.

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