Web Forms :: When Logout Web Application Gives Error (Hosted In IIS)
May 18, 2012
After login when i logout after 10 minutes my web application gives error (Hosted on iis):
Site URL is www.shoppersonlinecub.com login Id :admin@gmail.com
And Password: 1234 ( on logout it gives error).
Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
Unable to understand the error.
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Session.RemoveAll();
Session.Abandon();
Response.ClearHeaders();
if (Session["name"] == null) {
Response.Redirect("login.aspx");
}
I have used this line for logout code , after getting logout i i tried pasting the URL in another tab it is showing
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 31: {
Line 32: con.Open();
Line 33: Label1.Text = Session["name"].ToString();
Line 34: string a = ("select name from user2 where name='" + Label1.Text + "'");
I don't want to show this error message, i want to reload the login page when Pasting URL or Back Button ..how can i do this?
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Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
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