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FAQ about Interlibrary Loans (ILL) & Article/Chapter Scan & Deliver

Electronic Delivery: Adobe Reader and PDFs


Adapted with permission from the California Digital Library and McGill Library (August 20, 2013)

My web browser cannot open PDF documents. What should I do?

To access your document you will need Adobe Reader.

You will find information about how to enable the Adobe Reader web browser plugin here.

What do I do if I see the message “file does not begin with %PDF…”?

If you are using Acrobat Reader you need to update to Adobe Reader.

In Acrobat Reader, open the "Help" menu and choose “Check for Updates”. Follow the instructions to download the most recent version of Adobe Reader from the Adobe site.

Where do I find technical support for Adobe Reader?

See the Adobe Reader Support page.

The following is a list of pages which may also be helpful:

What do I do if I get the error message “one or more Adobe PDF Extensions are disabled” when I open a PDF?

If you are using Internet Explorer and are seeing this message while trying to open your document, the following steps should help resolve the problem:

  1. Open "Internet Options" in the Control Panel and click the "Advanced" tab.
  2. Select the check box "Enable Third-Party Browser Extensions".
  3. Click OK and then restart Internet Explorer.

If this does not resolve the problem, try the following:

  1. In Adobe Reader, open the "Help" menu.
  2. Click the menu item "Repair Adobe Reader Installation".
  3. Choose "Yes" to repair the current installation of Adobe Reader.

Updated: Tuesday 22 September 2020
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