First in Internet Explorer, click Tools - Manage Add-ons and ensure the Add-ons “Adobe PDF Link Helper” exists and it is enabled. If this does not take care of what you want, try these:
1. Make sure that the system meets the requirements for the Acrobat product that you use.
Acrobat can't run correctly if the system doesn't meet the following requirements:
• Intel Pentium processor
• Microsoft Windows XP Professional or Home Edition with Service Pack 1 or 2, or Tablet PC Edition, or Windows 2000 with Service Pack 2
• 128 MB of RAM (256 MB recommended)
• 460 MB (Professional) or 360 MB (Standard) of available hard-disk space; optional installation files cache (recommended) requires an additional 300 MB of available hard-disk space.
• 1024 x 768 (Professional) or 800 x 600 (Standard) screen resolution
• CD-ROM drive, if installing from a CD
• Internet Explorer 5.5 or later
2. Make sure that the ActiveX folder contains files required for web browsing.
To open PDF files in a browser window, the ActiveX folder must contain the following files: Acropdf.dll; Acroiehelper.dll; Gbdetect.dll; and Pdfshell.dll. If any of these files are missing, repair Acrobat or Adobe Reader by choosing Help > Detect And Repair, or reinstall the application.
You can find the Active X folder in Program Files/Adobe/Acrobat 7.0.
3. Use a supported version of the browser.
Make sure that you use a browser that Acrobat and Adobe Reader support, such as Internet Explorer 5.5.
4. Restart Windows after installing Acrobat or Adobe Reader to update the Windows registry.
To ensure that the Windows registry provides the information your web browser requires to view PDF files, restart Windows. If the Windows registry doesn't update after you install Acrobat, it's possible that the web browser can't find the references it requires to access PDF files.
5. Remove older versions of Acrobat or Adobe Reader.
If you have an older version of Acrobat or Adobe Reader installed on the system, remove it. You can remove it by using the Add Or Remove Programs utility in Windows.
6. Repair Acrobat.
If you use Acrobat, repair or replace corrupt or missing files by using the Detect And Repair feature or the Add Or Remove Programs dialog box.
To repair Acrobat, do the following:
1. Choose Start > Control Panel.
2. Double-click Add Or Remove Programs.
3. Select Acrobat and click Change.
4. Follow the onscreen instructions to repair Acrobat.
7. Reinstall Acrobat or Adobe Reader.
To ensure that the correct plug-in information is added to the Windows registry, reinstall Acrobat or Adobe Reader.
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