On the File tab, click the Options button.Ģ. You can change the list of Block Files by selecting or deselecting the file types that the app opens in Protected View. The Block Files list in Word, Excel, and PowerPoint contains file types prohibited from opening or saving in Word, Excel, and PowerPoint, respectively. If you prefer to open these files in the Protected View mode, select the appropriate check box.
These two additional options control how to open specified files in Excel.
Always open untrusted Database files (.dbf) in Protected View.Always open untrusted Text-Based files (.csv.
