[squid-users] authentication issue

[Donald Sylvester Bacha]

Dear All,
 
Can you guys please advise on how to resolve authentication issue where pop up 
box keep prompting for authentication. Users are part of active directory and 
squid is set up to use ntlm for authentication. This issue is happening for all 
users. There were not any configuration changes of late. As an administrator, I 
am fairly new to squid. Your help would be extremely appreciated. 
 
Regards,
Donald