Interesting problem when moving between environments

Hey guys

I created this video to demonstrate what's going on. Essentially, we have two environments that are hosted on different servers. The one we host is using Umbraco and the other one is hosted with a third-party. The third-party uses a mask so that certain web-page requests are routed to our site. A problem arises however when users try to move back from our site to the other site -- I think it has something to do with caching, session state, or cookies. Any help or advice would be greatly appreciated. Thanks in advance!
LaBowskiAsked:
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KimputerIT ManagerCommented:
Seems it only happens in the unique situation if a customer arrives directly at:

http://www.sammamishmortgage.com/local/mortgage-company/states/WA/xxxxxxx

and then clicks on the Estimate Request, which throws the 404 because the cookie at that time is:

Cookie: ASP.NET_SessionId=; _ga= etc etc

Only after an .ASPXANONYMOUS= and ASP.NET_SessionId cookie has been given will it continue. Somehow, this cookie is given after you get the error, hit back, press link, get error, hit back, press link, get error, hit back, THEN press link again (now the cookie gets set).

Therefore I would suggest you to look if the cookie setting code is the same on your "normal" site and on the /local site, which resides on the same server (this has nothing to do with local.sammamishmortgage.com, as I never touched that server during testing). Just adding that code in the /local site would solve this problem is my suspicion.

On a side note, did you know google knows nothing about this www.sammamishmortgage.com/local/etc subfolder and local.sammamishmortgage.com site? This means this problem is currently non-existent  for regular visitors
LaBowskiAuthor Commented:
So essentially, there is a cookie or session being dropped on the main website that needs to be added on our environment?
KimputerIT ManagerCommented:
Yes the main site has cookies and sessions, while the /local site doesn't. Then jumping to the asp script of the main site causes this problem. Just add the same cookie code to the /local site

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LaBowskiAuthor Commented:
Doesn't asp.net have cookies and session turn on by default?
KimputerIT ManagerCommented:
You still need to put code in all the pages. It can't just magically do things by itself.
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