This content has been marked as final. Show 2 replies
Drill down into the sqldeveloper/bin directory. Start the sqldeveloper.exe from there. That should open a cmd window allowing you to see any error messages that might be causing SQL Developer to not open correctly.
To avoid losing the window before you can read what went wrong, run the sqldeveloper.exe version in directory
If you should need to do a more in-depth investigation, the following offers some good advice on debugging:
SQL Developer Team