When you try to view a PDF in Internet Explorer, you see the error message, "There is a problem With Adobe Acrobat/Reader. Please exit Adobe Acrobat/Reader and try again." When you click OK to the error, the PDF opens outside the browser.
This error occurs when you use the Customization wizard to create a transform for Acrobat or Reader 8 or 9, and choose one of these options: The error occurs if the computer does not have a version of Acrobat or Reader already installed. When you create a transform in Adobe Customization wizard 8 or Customization wizard 9, you can set the default viewer for PDF files. "Installer will decide which product will be the default" is the default setting. Use this option when you are uncertain if the target computer has a version of Acrobat or Adobe Reader that won't be removed during installation. When installed silently using this option, Acrobat is always configured as the default viewer.

