How do I make Adobe Acrobat Reader 9 to be my default Internet Explorer PDF plugin?

"After trying various suggested methods, here is the only thing that actually worked:

Control Panel
Add/Remove Programs
Locate Adobe Reader, click Change/Remove
Select Repair

Magic, it worked. The PDFs in IE invoke the Adobe Reader plugin."

"Have you tried to right click a pdf file and change it's association (under properties)? I tested and it worked (I also have foxit and adobe, even though I prefer foxit).

right click > properties. The file properties window will appear. Choose the General tab. You'll see a field called ""Opens with"". Click the change button and select the program that you prefer. This instructions are based on a Windows XP OS.

You can also try to open IE, and under tools > manage add-ons verify whats configured and change it."