I keep getting this message on a legitimate site...at one time there was no problem accessing the site. As I know it is safe I proceed to the site anyway. Each page I attempt to access throws up the same problem. The site relates to a choir organisation I belong to; I have contacted the owner who advised I may have very sensitive security/Firewall protection. There is no problem accessing the site via mobile or tablet - only on my desktop PC and this is the only way I like (and know how to) to download vocal guidetracks and sheet music. Would be grateful for any advice to rectify this...thanks.