@Dave007, that explains it. I have been having this problem myself an wondered why it sometimes persisted the changes and sometimes not. The problems is the tray icon which remains after you've closed Evernote (with the close x). This then gets shut down with Windows and doesn't save the sort settings. If I make sure I close with File -> Exit the settings are changed and persisted. It would be much better if these settings were saved to the Registry when they are changed instead of waiting for the application to close in a particular way.