Solution:

　　Run regedit as the AdministratorExpandHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionApp PathsAdd a newKey to App Paths called sqldeveloper.exeSet the (Default) value to the full path to the executable (including the executable name).Create a new String value for sqldeveloper.exe called Path and set its value to thejre / bin folder in the SQLDeveloper files.

　　And here’s what it looks like:

　　This problem isn’t limited to Oracle SQLDeveloper. It will be common to any application distributed without an installation process that is dependent on a runtime file that was formerly located in the Windows folder.