Do you mean downloading the install files from an Internet site to your computer, or do you mean running the installer after you have downloaded files?
What are the details of your computer and operating system, and are you using an Administrator account?
I am receiving the following message when I try to down the file. Please install a program or, if one is already installed, create an association in the Default Programs control panel.
I am using Windows 7 and I am in as the Administrator account.
What program are you using? I see that you mention Elements 13 and make mention of PSE 9 (which typically represents Photoshop Elements 9).
If your program is Photoshop Elements 13, then you have posted in the wrong forum. Your thread has been posted in the Adobe Premiere Elements Forum (video editing). If your program is really Photoshop Elements 13, please repost your thread in the Adobe Photoshop Elements Forum or wait for a moderator here to see your thread here and move it from here to there.
Wherever your thread goes, please include from whom you are downloading your program - Adobe direct or from some place else and what is the computer operating system involved?
We will be watching for your clarification on the program involved.