This error can occur if you try to send a Word document by using the Send Using E-mail ( File tab, Share , Send Using E-mail ...

This error can occur if you try to send a Word document by using the Send Using E-mail (File tab, Share, Send Using E-mail command) command. If Word stops responding, or you closed Word and a new e-mail message dialog does not appear, it is possible that Outlook did not receive the request to start a new message.