ASP.NET MVC Shared Forms Auth Cookies Across Servers

Question

All,

We currently have subdomains across two boxes that require shared forms authentication cookies.

• Box1: Windows Server 2008 Standard/IIS 7
• Box2: Windows Server 2009 R2/IIS 7.5

We have already matched up all the forms auth values and machine key values in the web.config files, yet when we switch between apps, there is no auth cookie on the second machine. It doesn't matter which direction we go.

Are there issues sharing forms auth cookies between IIS 7 and 7.5?

Thanks,

B