Authentication window pops up multiple times

[AndrewComte]

I am using Nginx 1.12 and the latest version of this module. I want user authenticates twice when they login. and in order to prevent LDAP AUTH pass the password. so i added following script in the config file: proxy_set_header Authorization ""; but when i added this, the authentication window pops up three or four times... does anyone has the same issue? and another issue is how to set ldap authorization timeout? the application and ldap auth both have different timeout set...

thank you for helping me.