Enable ActiveX controls in Google Chrome & Firefox. Besides Firefox, you can also use it in Google Chrome browser for similar functionality. Also, if you are looking for a way to manage ActiveX components on Windows, then checkout ActiveX helper utility to view, enable and disable ActiveX components easily. Internet Explorer - Allow the download of unsigned ActiveX controls. Open Internet Explorer. Click on Tools > Internet Options. Go to the Security tab. Click on Custom level. In the menu that opens, scroll to " Download unsigned ActiveX controls " and select " Enable ". Click on Ok to validate and close the Settings window. Google Chrome - ActiveX Settings. 1. Click the Chrome Menu icon at top right on window. 2. Select "Settings" 3. Click on "Show Advance Settings" 4. Click on "Change Proxy Settings" 5. Go to the "Security" Tab and then click the "Custom Level" button. 6. Change "Download Signed ActiveX Control" and "Download Unsigned ActiveX Control" to prompt. 7. However, the IE Tab Extension for Google Chrome allows the use of a If ActiveX controls remain unusable with the IE Tab extension, look for a browsers like Google Chrome, Apple Safari and Mozilla Firefox use NPAPI protocols instead. Trusted Sites->customlevel->ActiveX->download unsigned control[by enabling it i am not able to add any add-ons in the mozilla browsers. This extension lets you open a website in a separate Firefox tab using the Internet Explorer rendering engine, thus allowing you to run ActiveX controls.