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Then click the Trust Center Settings button.

In the left-hand navigation pane, click Trust Center.In the left-hand navigation pane, click Options.Open Excel and, from the menu ribbon, click File.To change File Block settings to enable old Excel file types to be opened as normal, proceed as follows. By disabling Protected View, and allowing old versions of files to open as normal, you could be exposing your computer to possible security threats. Protected View opens potentially dangerous files, without any security prompts, in a restricted mode, to help minimize harm to your computer. Take care! The Protected View security feature is considered important, as the code used to open and save older file formats may have vulnerabilities that hackers can exploit. This article describes how to change Excel File Block settings to ensure that selected old file types are opened as normal by Excel.

Or, if your File Block settings are set to Do not open selected file types, the file won't even open in Protected View, and instead an error message appears. Instead, it either causes the file to open in Protected View, and disables the Save and Open features. When you try to open file types created in previous versions of Office (like an Excel 95 spreadsheet for example), the file will open in Protected View by default, and the editing functions will be disabled.įile Block prevents outdated file types from opening as normal.

Changing File Block settings to enable old Excel file types to be opened as normal