When I view a PDF in Firefox, a menu pane on the side of the window just started showing up. It has "Export PDF" forward the top and "Learn More" on the bottom. I see that there is an arrow to collapse it, but I don't want to have to do this every time I view a PDF. How do I get rid of this? BTW, I have Acrobat X Pro.
You need to first manually hide the Tools pane at right.
Then go to Edit menu > Preferences > Documents and unmark the option "Open tools pane for each document".
Click OK to save settings.
Thank you for your response! Mine doesn't have that option. I have Acrobat 10 Pro. Any other ideas?