ActiveX is a legacy technology. Because ActiveX controls have deep access to the Windows operating system, they became a prime target for security exploits over the years.
When you "download" or enable this control, you are essentially giving another program the ability to: Open and display PDF files within its own window. adobe reader activex download verified
Since most modern browsers now have built-in PDF viewers (based on PDF.js or similar engines), the need for an ActiveX download has dwindled. ActiveX is a legacy technology
If you have Adobe Reader installed but the ActiveX control isn't working in your app or browser: Since most modern browsers now have built-in PDF
Unauthorized access to your local file system. Troubleshooting Missing ActiveX Controls
Always download from the official Adobe Acrobat Reader download page . Avoid third-party "driver update" or "DLL download" sites, as these often bundle unwanted software or outdated, vulnerable versions.