User283571144 posted
Hi patweb99,
As far as I know, if we don't set the domain attribute in the form authentication, the application will work well with multiple domain.
It could create session well.
I have also created test demo on my side, it works well.
My test web.config:
<authentication mode="Forms" >
<forms loginUrl="Login.aspx" defaultUrl="Dash_Board.aspx">
</forms>
</authentication>
<authorization>
<deny users="?" />
</authorization>
Test apsx:
protected void Page_Load(object sender, EventArgs e)
{
if (Session["test"] != null)
{
Label1.Text = Session["test"].ToString();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
Session["test"] = "Has Session";
}
Result:

Best Regards,
Brando