Excel® 2013 On Demand

Setting ActiveX Security Options

An ActiveX control provides additional functionality, such as a text box, button, dialog box, or small utility program. ActiveX controls are software code, so hackers can use them to do malicious harm, such as spreading a virus. You can use the Trust Center to prevent ActiveX controls from harming your computer. If the ActiveX security options are not set to the level you want, you can change them in the Trust Center. If you change ActiveX control settings in Excel, it effects all Microsoft Office programs. The Trust Center uses a set of criteria—checks the kill bit and Safe for Initialization (SFI) settings—to make sure ActiveX controls run safely.

Change ActiveX Security Settings

Click the File tab, and then ...