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Network Policy Server denied access to a user - reason code 66

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I am attempting to connect to a Wireless network (802.1g) using RADIUS.

Server: Windows 2008 R2 SP1 running NPS.

Client: non domain member running Windows 7 SP1

Access point is a Linksys WRT54G

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Client side diagnostics show, in summary, that...

Pre-association - success

Association - success

Security and authentication - failure

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Event Viewer - Security log - on the server side displays a number of Event 6273 failure entries (padlock icon).

"Network Policy Server denied access to a user"

Authentication type is EAP

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NOTE: There is no EAP-TLS, no PEAP, since computers in question are non-domain members and could not efficiently obtain client side certificates and would not,  by default, trust the server's certificate for PEAP.

NOTE: We do have a Policy for domain members (PCs) that use machine authentication with certificates. That has been disabled for troubleshooting at this time.

Reason Code: 66

Reason: The user attempted to use an authentication method that is not enabled on the matching network policy.

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What methods are checked?

- MS-CHAP-v2

- MS-CHAP

-CHAP

Yes, there are a couple other network policies, but I have given top priority to the policy being discussed here and even went to the extent of disabling the others.

I have tried with two different users, one being an admin.

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Authentication attempt is manual on client side: find proper SSID and attempt to connect. User is prompted for Active Directory credentials - with results explained above.

How can I resolve this problem?

Thanks in advance!


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