What is Protected View in MS Excel 2010 and how to disable it?
Protected View is a new security feature in MS Excel 2010. Whenever you open a file downloaded from Internet in Excel 2010, it will open in Protected View. Since files downloaded from Internet, received as an email attachment and from other unsafe location may contains viruses and can harm your computer so to minimize the risk of these security threats, files are opened in Protected View. In Protected View, you cannot edit your file until you click the Enable Edition option. If you want to edit file, click the Enable Editing button as shown in the below image: