In the Trust Center dialog box, on the File Block Settings tab, in the File Type list, select or deselect the Open check box and the Save check box to prohibit the file type from opening and saving. In the *** Options dialog box, on the Trust Center tab, click the Trust Center Settings. Microsoft Project 98 will not open or save a Project (.mpp) file created by. On the File tab, click the Options button.Ģ. There are three principal methods of creating a new project: Start with a. 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.

Microsoft files will not open