Session cookie lost since IE7
I have an ASP.NET 2.0 application. On successful login, the login page is redirected twice. This works fine on all test environments and production servers except one. We can see from Fiddler that the login is redirected to the second page and redirected to the third. On going to the third page, the authentication cookie is lost and the page is redirected back to the login. As mentioned, this only happens on one production server running IE7. It works great if we try IE7 from the server itself. It only fails from other client machines. It works great if I just try the same from FireFox. I can clearly see the fiddler that the cookie is not lost in this case.
Any ideas?
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This is a long shot, but does it have a server name in it? A while ago there was an IE bug where it could not save cookies with the server name / url that had an underscore in it, so if I were to access the server with http: // server_name I was unable to save the file cookie, but accessing it via http: // intranetdnsalias will work fine.
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