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Authentication Required for Explicit Proxy

In an Explicit Proxy deployment, has anyone experienced and identified the reason of getting intermittent 401-Auth Required messages in the policy trace, with HEAD as the HTTP method and the URL being the actual explicit Proxy IP and port?

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McAfee Employee
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Re: Authentication Required for Explicit Proxy

Hello @__invited__dani3,

I have no idea at the moment what it could be. Would also be interesting to know what the client IP is (real client or MWG itself!?). In past, we had some cases where customer had proxy HA mode configured and a proxy loop was occurring based on mis-configuration, but as you mentioned, you are using explicit proxy mode, so this example should not matter.
At the end, some more logs and the configuration itself should be checked via feedback file and this should not be uploaded here because of sensitive information. Please open a support case and attach the data there.

If you get a root cause and solution, please share it here for documentation purpose 🙂

Marcel Kutrieba
Technical Support Engineer

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