The most recent build number of the MSJVM is 3810. The previous version was 3805. There is a mention of MS VirtualMachine version 3812 that only provides a hotfix to the MSJVM to make itcompatible with DST 2007 (daylight saving time 2007) rules. The 3810 Microsoft VM includes a fix for securityvulnerability with ByteCode Verifier component of the MS JVM, that does not correctly block some malicious Java applets. Also you can update previous versions of the Microsoft Java Virtual Machine to Build 3810by installing the Microsoft 816093 critical update. Download Maquina Virtual Xp msjvm