camotto wrote:

> I created a hyperlink within my notes to a PDF file. When I try to
> open it from within OneNote, I get the usual "this file may be
> unsafe", then an error message that says file cannot be opened
> because "No program is registered to open this file."
>
> This is not correct/true - I confirmed that Adobe Reader 9.1 is the
> default program to open all PDF files and the "always use this
> program to open these kinds of files" is checked off.

To cure problems with PDF program association - depending on the OS:
1.) Vista
- download and run UNASSOC (it does not need to be installed);
- navigate to ".pdf" and delete the entry;
- open the Reader and let it be repaired
Help => Repair Adobe Reader installation.

2.) XP:
- open "Folder Options" (from the Explorer or the Control Panel);
- open the tabbed page "File Types";
- navigate to PDF;
- use the "Delete" button to remove PDF from the lost;
- run a repair (as above).

Rainald