GPO for adding office trusted locations Protected View settings are specific to each application in Office (Word, Excel and Powerpoint only) Administrative templates- Microsoft Office 2016- Microsoft Product- Options- Security- Trust Center- Protected View
Excel file opens in read-only mode - social. technet. microsoft. com 3 Click Options 4 Click Trust Center 5 Click Trust Center Settings 6 Click Trusted Settings 7 Click the Check box to "Disable Trusted Documents" 8 Click Okay Hopefully this helps for those looking for the obvious solutions