Some explorer java application (Oracle etc) may cause
problems getting the explorer windows.
In most problems 3 main things should be checked:
1. User has administrative rights on computer – java update
or application updates require the user to be admin in order to
Install those updates.
2. Internet explorer should be updated with the last updates.
3. Check that no add INS (ask.com, weather toolbar) installed and isolate the problem by
uninstalling add ins and check which one makes the problem.