Out of the blue, my brother says mailto links and urls no longer work
from within an Excel spreadsheet. i.e. click on the email address & it
should open the mail client. He gets an error message related to
security saying go to the administrator. I guess this is a security
problem from XP, but I am clueless as to how he can fix it.

Thanks
Greg

If you can remember the 60's....you weren't really there