Clear the Java Web Start (javaws) cache
Open your computer's DOS prompt by selecting the Start menu followed by the Run option. Then, enter command followed by pressing the Enter key.
Type javaws at the DOS prompt followed by the Enter key to see the Java Web Start command-line options.
Type javaws -Xclearcache followed by the Enter key to clear Java Web Start Cache on your computer. After the cache has been cleared, the local drive prompt will appear on the DOS prompt.