IIS 7 and Above
Cookie problem in IIS7 and IE: New session id with every request
Re: Cookie problem in IIS7 and IE: New session id with every request
May 26, 2011 03:03 AM|JDMXcenda|LINK
Thank you!! This is incredible. We were having the exact same problem, and sure enough removing the underscore resolved it. I can hardly believe it.
I'll never get the folks at work to believe/understand that this is what has been holding us up for the past two days. We had an underscore in the name as part of a host header, i.e. AppName_Stage, AppName_Test, and so on.
The ol', "well, it works in my development environment" was becoming a pretty tired refrain. I can't believe this is the actual reason, but now it actually works.
Thank you so much for posting the question *and* the answer! You rock!