I have an application which loads an applet displaying graphics. On one VMWare virtual machine with Windows 7 32 bit SP1 IE9 the applet does not load and ClassNotFoundException occurs. Does anyone know why does this issue occur and how to fix it. On other VMWare virtual machines with Windows 7 32 and 64 bit this bug is not reproducible. Also on the same machine with Firefox the applet is loaded correctly. Thanks in advance.