Fix Missing 64-Bit Acrobat PDF Plug-In DLLs in Internet Explorer
Question details
Users need to resolve missing 64-bit ActiveX DLL files required for Internet Explorer's Enhanced Protected Mode in Acrobat DC, and find ways to trace the original source of downloaded PDF files.
- Product
- Adobe Acrobat DC
- Device & OS
- Windows
- Scenario
- Attempting to open and view PDF files directly within an Internet Explorer environment with high-security modes enabled, or trying to perform a security audit on downloaded PDFs.
- Observed behavior
- Internet Explorer fails to render the PDF because the required 64-bit Acrobat plug-in DLLs are missing, and users cannot find download origin URLs stored within the PDF metadata.
Ensure you are logged in with an administrator account and verify that both Internet Explorer and Adobe Acrobat DC are updated to their latest versions.
Repair Adobe Acrobat DC Installation
Use the built-in repair tool to restore any missing or corrupted 64-bit DLL files required for the browser plug-in.
Acrobat DC includes an automated utility that scans the installation directory and replaces missing components, including ActiveX DLLs needed for Internet Explorer's Enhanced Protected Mode.
Open the Adobe Acrobat DC application on your Windows computer.
Navigate to the top menu bar and click on 'Help'.
Select 'Repair Installation' from the drop-down list. Confirm the prompt and allow the process to complete.
Close and reopen Internet Explorer to verify if the PDF plug-in now loads successfully.
Trace the Origin of a Downloaded PDF
Determine where a PDF came from by checking Windows file properties and email headers, since PDFs do not store download URLs.
View PDFs Securely with WPS Office
Bypass legacy browser plug-in errors entirely by viewing your PDF documents in WPS Office. It provides a fast, secure, and robust desktop environment for all your reading and editing needs.
- 1. Download WPS Office: Visit the official WPS website, download the free installer, and complete the installation process.
- 2. Open WPS PDF: Launch WPS Office and click on the 'PDF' tab from the main dashboard.
- 3. Load Your Document: Click 'Open', select your downloaded PDF file, and view it instantly without any browser compatibility issues.
Frequently Asked Questions
Why does Internet Explorer require 64-bit ActiveX DLLs to display PDFs?
When Internet Explorer runs with Enhanced Protected Mode enabled, it operates as a 64-bit process for better security. This requires all loaded plug-ins, including the Adobe Acrobat ActiveX control, to provide compatible 64-bit DLL files.
Does a PDF file record the website URL it was downloaded from?
No, the PDF format does not natively embed the download URL or source website into its metadata. Tracing a file's origin usually requires analyzing system-level file zone identifiers or the original email transmission.
What if repairing Adobe Acrobat does not restore the missing IE plug-in?
If the built-in repair tool fails, you may need to completely uninstall Adobe Acrobat DC, restart your computer, and perform a fresh installation of the latest 64-bit version from the official Adobe website.
Can I read PDF files without using an Internet Explorer plug-in?
Yes, using standalone desktop software like WPS Office allows you to open, read, and edit PDF files directly on your computer, eliminating the need to troubleshoot complex browser plug-ins.
