Open Excel and, from the menu ribbon, click File

In the left-hand navigation pane, click Options.

In the left-hand navigation pane, click Trust Center. Then click the Trust Center Settings button.

The Trust Center page opens.

In the left-hand navigation pane, click Protected View to see the Protected View options.

Take care! Protected View opens potentially dangerous files, without any security prompts, in a restricted mode, to help minimize harm to your computer. By disabling Protected View, you could be exposing your computer to possible security threats.

To disable Protected View, and stop files from opening in Protected Mode, untick all three checkboxes:

1. 1. Enable Protected View for files originating from the internet,
   2. Enable Protected View for files located in potentially unsafe locations,
   3. Enable Protected View for Outlook attachments.

• In the left-hand navigation pane, click File Block Settings
• The File Block Settings options appear.

To stop Excel from blocking selected Excel file types, then untick the following checkboxes:

1. Excel 95 Workbooks,
2. Excel 4 Workbooks,
3. Excel 4 Worksheets,
4. Excel 3 Worksheets,
5. Excel 2 Worksheets,
6. Excel 4 Macrosheets and Add-in Files,
7. Excel 3 Macrosheets and Add-in Files,
8. Excel 2 Macrosheets and Add-in Files