ASP.NET Identity cookie and subdomains
问题 I'm trying to share my ASP.NET Identity cookie across subdomains. Currently just locally. sub1.domain.local sub2.domain.local I have the same machine key on both sites, but a cookie created on sub1 does not validate on sub2 and vice versa. The resulting cookie domain is always ".domain.local" (which should be correct??) This is my setup in Startup class: app.UseCookieAuthentication(new CookieAuthenticationOptions { AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie, LoginPath =