Error Regarding the logout the session

Quote:

when i going to logout my website from user module the validation error is occurred

To solve this problem, set CuasesValidation="false" to your Log Out LinkButton.
Try this:
HTML:

<asp:linkbutton id="btnLogOut" runat="server" causesvalidation="false" text="Log Out" onclick="btnLogOut_Click" xmlns:asp="#unknown" />

Code Behind:

protected void LinkButton_Click(object sender, EventArgs e) 
{
    Session.Abandon();
    Response.Redirect("Login.aspx");
}

Quote:

after the log out session is written on master page.

This part of your question I din't understand. After clearing the session like the above example, you wont get the error like this.


--Amit