I have done FBA configuration in IIS. I am getting success to login through FBA User. But when click on sign out through any SharePoint user or FBA user, it will give error
"Exception of type 'System.ArgumentException' was thrown. Parameter name: encodedValue"
I note that When click on sign out it will redirect to "/SiteURL" not to "/SiteURL/_login/default.aspx?ReturnUrl=%2f_layouts%2f15%2fAuthenticate.aspx%3fSource%3d%252F&Source=%2F".
I dont know what happen..