Hi, I am using squid on Ubuntu server. Squid Cache: Version 2.5.STABLE12 My usernames have uppercase letters too, but they are not working. I am using ncsa_auth and the relevant lines are below. auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/passwd auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off But still it is not working? Can someone suggest a solution? Googling didn't help much in this case. With warm regards, -Payal