Using 64-bit Java on Windows machine is not supported at this time. While we do provide support for 64-bit Windows, the code is not native 64-bit. As a result customers will run into issues while using 64-bit java on the Windows Master.
Use Java 32-bit at this time on the Windows machine as the code for Applications manager is native 32-bit code.
At this time using Java 64-bit on a Windows Master is not supported.