After the download is complete:
If there is a failure at any point during the installation of Acrobat Reader, the installer performs a complete uninstall. For this reason, it is important not to close the installer application by clicking its close box in the upper right corner of the background window after clicking the "Thank You" dialog box that appears at the end of the installation. If you wait for a second or two, the installer will automatically close the background windows after the installation is complete.
Detail
The hard drive containing your Temp directory has a large amount (e.g., more than 1 GB) of free space.
Solutions
Do one or more of the following:
Additional Information
When you open a PDF from the Internet Explorer window, the Acrobat 3.0 viewers try to access the Temp directory.
When the Temp directory is on a hard drive with a large amount of free space, the viewer can't access it and returns
the error, "Internal error has occurred." The Acrobat 3.01 viewers are able to access the Temp directory
when it's on a hard drive with a large amount of free space.