SAML 2.0 SP Init "System Error: We are unable to continue at this time. Please close your browser and try again."
Symptom
SP init configured realm throws the error "System Error: We are unable to continue at this time. Please close your browser and try again. Error: at System.Threading.Thread.AbortInternal() at System.Threading.Thread.Abort(Object stateInfo) at System.Web.HttpResponse.End() at SAML20SPInitWL.Page_Load(Object sender, EventArgs e)" upon user authentication.
Cause
The cause of this issue is the PostAuth cookie name does not match in the file.aspx.vb file
Resoltuion
Change the (FormsAuthTokenName) to (ConfigurationManager.Appsettings("PostAuthCookieName")