不确定，但是尝试一下，希望对您有所帮助.

Im not sure,but try this,I hope it will help you.

Session.Remove("AnotherSession"); 

插入

insted of

Session.Abandon();
Session["AnotherSession"] = null;

这对我有用:

This worked for me:

Session.clear();//clear session
Session.Abandon();//Abandon session
Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetNoStore();

这个好技巧将为您提供帮助.

注销后浏览器后退按钮问题 [

This good tip will help you.

Browser back button issue after logout[^]