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Kerberos works on Windows XP with IE 7 and 8, but a client who is on Windows 2000 with IE 6 can not authenticate with Kerberos. The Windows Server 2003 shows authentication as NTLM.

The web application is running on port 40000 with its own app pool.

How can I get IE 6 to authenticate with Kerberos?

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up vote 0 down vote accepted

I have fixed the issue. I found the answer Here

The option under tools > Advanced > Enable Integrated Windows Authentication (requires restart) check box in the Security section was not checked. This looks not be set by default for our network.

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