Problem using FormsAuthenticationTicket and multiple different apps open at once in browser

I have several different apps that I use LDAP AD authentication with. I set the FormsAuthenticationTicket as such:
Dim authTicket As FormsAuthenticationTicket = New FormsAuthenticationTicket(1, _ FullName, DateTime.Now, DateTime.Now.AddMinutes(60), isCookiePersistent, userData.ToString) When I open the second or subsequent app in another tab, it causes the other open app(s) to log out. I tried the following, thinking it would make the tickets unique to each app, but it did not work, the second and subsequent app opened causes the prior ones to log out.
Dim authTicket As FormsAuthenticationTicket = New FormsAuthenticationTicket(1, _ FullName & "*" & System.Configuration.ConfigurationManager.AppSettings("SiteName"), _ DateTime.Now, DateTime.Now.AddMinutes(60), isCookiePersistent, userData.ToString) I am not sure what is causing all the apps to step on ea ...