I have the same problem with pdf files opening in Chrome. I tried changing the setting in Chrome to use the default program but it still continued to open in Chrome (even though Acrobat was the default program). I gave up, uninstalled Chrome and used Opera. Despite this, the same problem exists except now it tells me Chrome needs updating! If I use File Manager to list th files it shows pdf files with the Chrome icon. By selecting the default program to open & selecting Acrobat all is fine until next reboot.Windows 7 Ultimate, 64 bit. ANy help greatly appreciated. Thx.