When a user opens OpenOffice document in Microsoft Word 2013 and Word 2010, sometime the following Protected View message will be displayed.
One of the reasons for this message might be the File Block settings for OpenOffice document is enabled. To fix this problem, click the File menu and then the Options link.
In Word Options, navigate to Trust Center and click Trust Center Settings button. This would launch the following Trust Center window.
To remove the protected view for OpenOffice document, un tick the check box “Open” for file type OpenDoc ument Text Files. If you Word to allow saving an OpenOffice document then un tick the check box with label as “Save” as well.