Yet, if you are using Office versions older than 2010, you are able to upgrade from the Isolated Conversion Environment to the Protected View. Protected View is available for Office 365, Office 2019, Office 2016, Office 2013, and Office 2010. Protected View is a read-only mode where most editing functions are disabled. It is offered by Microsoft Office to replace the former Isolated Conversion Environment.
Protected View is an isolated sandbox environment for Excel, Word, and PowerPoint.
Tip: Though this post is based on Excel Protected View, it is also applied for Word Protected View and PowerPoint Protected View.