title: a cookie that refuses to delete
body: <p>I am having a problem with deleting cookies in classic ASP. Setting and retrieving the cookies is working wonderfully, without problems, on multiple domains. Deleting the cookies is not.<br>
  The cookie that refuses to delete will time out and remove itself on the original timeout, but that is not an option.<br>
  I've looked through the documentation, stack overflow, Stack Exchange (web applications) (some of the problems are similar and gave me some of the answers, but not the same), cookie central, and MSDN.<br>
  Updating the pages to ASP.NET is not an option at this time.
  The cookie values and names are in hexadecimal with a leading "O" to eliminate any possible problems with the encrypted data and the scripting languages (ASP, VBScript, Jsvascript, SQL) having problems with the characters.<br>
  Note that some of the different attempts are commented out.<br></p>
  
  <pre><code>Sub Set4HrCookie(ByVal CookieName, ByVal CookieValue)
      Response.Cookies(CookieName).Expires = DateAdd("n", 240, Now())
      Response.Cookies(CookieName).Domain = ".mydomain.net"
      Response.Cookies(CookieName).Path = "/"
      Response.Cookies(CookieName) = CookieValue
      Response.Cookies(CookieName).Secure = FALSE
  End Sub
  
  Sub Set1DayCookie(ByVal CookieName, ByVal CookieValue)
      Response.Cookies(CookieName).Expires = Now() + 1
      Response.Cookies(CookieName).Domain = ".mydomain.net"
      Response.Cookies(CookieName).Path = "/"
      Response.Cookies(CookieName) = CookieValue
      Response.Cookies(CookieName).Secure = FALSE
  End Sub
  
  Sub KillThatCookie(ByVal CookieName)
      Response.Cookies(CookieName).Domain = ".mydomain.net"
      Response.Cookies(CookieName).Path = "/"
      Response.Cookies(CookieName).Expires = Now() ' Now() - 1 ' #01/01/1999#
      ' Response.Cookies(CookieName).Secure = FALSE
      Response.Cookies(CookieName) = ""
  End Sub
  </code></pre>
  
  <p>An example of a cookie that is refusing to delete:</p>
  
  <pre><code>O9DCCF20B15CA0F382184A96BAB
  OFA86B660438C4863797E4485DE
  mydomain.net/
  </code></pre>
  
  <p>The following are some of the URLs that gave me information.<br>
  You have to assign the .domainname.com domain when you clear them out otherwise it won't clear them out.<br>
  <a href="http://forums.asp.net/t/1399232.aspx/1" rel="nofollow">http://forums.asp.net/t/1399232.aspx/1</a><br>
  Cookies with a DOMAIN value in classic ASP<br>
  <a href="http://blurbly.net/5_5.htm" rel="nofollow">http://blurbly.net/5_5.htm</a></p>
  
  <p><b>Edit:</b> Further tests have shown that because the "Path" was used on the cookie, the "Path" was required on the "Kill".
  <br><b>Edit:</b> This is IIS-6 - it appears to be similar to the known error with VB6 INI files. When a program hits the INI file too fast the system can't keep up and INI file corruption happens.</p>