You can turn protected view off for a document by doing the following:
1. Bring up the "File" menu by pressing alt+F.
2. Arrow down once to the "Info" selection and press ENTER.
3. You are now on the "Protected View" submenu or you may have to tab once to get there.
4. Right arrow to open this menu and look at the various choices available, one of which is to allow editing which will turn protected view off for that document now and in the future, if you save it.