Hi All, I have a Squid proxy where I have NTLM authentication set up which works perfectly with IE or even FF. I recently ran into a problem where users are not able to see a video (http://web.servicebureau.net/conf/meta?i=1113301587&c=2343&m=was&u=/w_ccbn.xsl&date_ticker=FRX) because WMP pops up authentication window asking username and password. I tried to apply KB2515525 on the machine but it didn't solve the problem. I also tried to set the netbios name or the proxy (proxy instead of proxy.something.com) as suggested on some site without success. I can see that HTTP407 is being sent to the client (WMP) but it doesn't authenticate itself automatically. Do you have any idea how to resolve this issue permanently without bypassing the proxy authentication for WMP? I have IE 8.0.7600.16385 and WMP 12.0.7600.16667 Thanks in advance, cU

Hi, Have you configure the proxy settings in Windows Media Player? How to Configure Proxy Settings in Media Player Alex ZhaoPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Alex, Yes it's set to use IE proxy settings. Best regards, cU