Is it necessary to use auto-detect or can you choose "Use system proxy settings" instead?

(I'm not sure what auto-detect does, but it can cause Firefox to invalidate its session on some sites when the connection changes. In the past, this has been a problem for Yahoo users.)

hi yes here we are using auto detect proxy setting bcz for quich change of network . like a user is working in my office and in second half he will be on a client side . so he will just connect his device without any IP configuration . and also there is no need to remember IP settings.

so pls help me to resolve to this issue .