Cause: The workspace is modified
1, modify the eclipse installation directory such as D: \ eclipse \ configuration \ .settings \ org.eclipse.ui.ide.prefs, delete
Content can be re-opened after RECENT_WORKSPACES
2，进入 Window > Preferences > General > Startup and Shutdown 选中 Prompt for workspace on startup。
3, delete your local working space of two folders (because of some configuration files)
4, reopen modify eclipse workspace