Microsoft Word 2013 now has added security setting that often opens documents in a Read-Only mode even if the document is checked out in Evolve.
To disable the Reading View.
Go to File – Options – General. Uncheck “Open E-Mail attachments and other uneditable files in reading view”
To disable Protected Mode. Go to File – Options – Trust Center – Trust Center Settings. Select Protected View, then clear all the checkboxes.