With Office 2024, ActiveX controls in Word, Excel, PowerPoint, and Visio will be turned off by default, and users will not receive any warnings.

A group of security experts publishes a report filled with tips on how individuals and organizations can reduce security risks in Microsoft's Internet Explorer when using ActiveX controls.

Click the Office button, choose PowerPoint Options > Popular and enable the Show Developer tab in the Ribbon checkbox and click OK. The Developer tab provides access to the ActiveX controls central to ...

However, any web-based documents should use the newer controls and not ActiveX. Internet Explorer will probably be retired in 2022, and currently, Edge doesn’t support ActiveX.