One of your users uses hotmail on occasion. She said she started getting denied downloading attachment a couple of months ago. I haven't changed my squid settings in about a year or so. I have this rule to block windows executable files... acl deny_files url_regex -i \.exe$ \.com$ \.wmf$ \.scr$ ^(\w+://)?([\w|\d|_|\.|\-|/]*?)\.exe(\?.*)?$ If I remove \.com$ it works. acl deny_files url_regex -i \.exe$ \.wmf$ \.scr$ ^(\w+://)?([\w|\d|_|\.|\-|/]*?)\.exe(\?.*)?$ Anyone know why this rule is affecting hotmail? Another user said she could download attachments from yahoo . Error: While trying to retrieve the URL: http://by108fd.bay108.hotmail.msn.com/cgi-bin/saferd/pcupdates%2edoc?