If it does not register automatically, open Command Prompt as Administrator and run: regsvr32 "C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroPDF.dll" Verifying the ActiveX Component in 2026
For IT administrators deploying Adobe Reader across an organization, standard consumer download pages are insufficient. You should apply for an Adobe Volume Distribution Agreement (which is free) to gain access to the official enterprise installers.
The default security level in IE is “Medium–high,” which allows properly signed ActiveX controls to run but may block them in more restrictive zones. For internal enterprise applications, you can add your site to the Trusted Sites zone and set the security level to “Medium” (the default level for Trusted Sites). More restrictive settings can prevent the control from loading at all.
: If you need the control for an application (e.g., in VBA, Delphi, or InTouch), it will appear in your "Available ActiveX Controls" list as Adobe PDF Reader after the main application is installed. Important Security & Compatibility Notes Adobe PDF reader activex missing in Internet Explorer 11
How to Verify the Adobe Reader ActiveX Download (Step-by-Step)
Adobe Reader ActiveX Download Verified: Securely Integrating PDF Functionality (2026)
To download and verify the Adobe PDF Reader ActiveX control, follow these steps to ensure you are using the official and most secure version. 1. Official Download Source Adobe Acrobat Reader ActiveX control
If you want, I can:
Given the security risks and the fact that Adobe's official documentation states that "development with these interfaces is not supported and no documentation is available," it is prudent to consider modern alternatives for embedding PDFs in applications.
In the modern world, the story has changed. Tech giants have largely moved away from ActiveX because of security vulnerabilities. Today, things are much simpler:
To confirm the file has not been corrupted or tampered with during transfer, compare the cryptographic hash of the downloaded file against the official hash published by Adobe.
. Adobe provides separate installers for 32‑bit and 64‑bit Windows, as well as for macOS.