re:
!> Thanks for your kindness, but where to set the allow authentication cookies?

http://support.microsoft.com/kb/283185

You can configure your privacy settings in Internet Explorer 6 by clicking
Internet Options on the Tools menu, and then clicking the Privacy tab.

The Privacy settings slider has six settings:
Block All Cookies, High, Medium High, Medium (default level), Low, and Accept All Cookies.

The following Privacy settings are available with the slider:

• Block All Cookies: Cookies from all Web sites will be blocked, and existing cookies
on your computer cannot be read by the Web sites that created them.
Per-site privacy actions do not override these settings.

• High: Blocks cookies that do not have a compact privacy policy or that have a compact privacy policy
which specifies that personally identifiable information is used without your explicit consent. Cookies that
were already on your computer before you installed Internet Explorer 6 are leashed (restricted so that they
can only be read in the first-party context). Per-site privacy actions override these settings.

• Medium High: Blocks third-party cookies that do not have a compact privacy policy or that use personally
identifiable information without your explicit consent. Blocks first-party cookies that have a compact privacy
policy which specifies that personally identifiable information is used without your implicit consent.
First-party cookies that do not have a compact privacy policy and cookies that were already on your computer
before you installed Internet Explorer 6 are leashed (restricted so that they can only be read in the first-party
context). Per-site privacy actions override these settings.

• Medium (default level): Blocks third-party cookies that do not have a compact privacy policy or that have a
compact privacy policy which specifies that personally identifiable information is used without your implicit
consent. First-party cookies that have a compact privacy policy which specifies that personally identifiable
information is used without your implicit consent are downgraded (deleted when you close Internet Explorer).
First-party cookies that do not have a compact privacy policy are leashed (restricted so that they can only be
read in the first-party context). Cookies that were already on your computer before you installed
Internet Explorer 6 are also leashed. Per-site privacy actions override these settings.

• Low: First-party cookies that do not have a compact privacy policy are leashed (restricted so that they can
only be read in the first-party context). Cookies that were already on your computer before you installed Internet
Explorer 6 are also leashed. Third-party cookies that do not have a compact privacy policy or that have a compact
privacy policy which specifies that personally identifiable information is used without your implicit consent are
downgraded (deleted when you close Internet Explorer). Per-site privacy actions override these settings.

• Accept All Cookies: All cookies will be saved on your computer, and existing cookies on your computer
can be read by the Web sites that created them. Per-site privacy actions do not override these settings.

NOTE: Changing your privacy preferences does not affect the cookie acceptance policy for cookies
that have already been set unless you move the slider to Accept All Cookies or Block All Cookies.

Juan T. Llibre, asp.net MVP
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