Cannot establish NTLM authentication channel with XXX

Question

Hello everyone, 

since we migrated to the Sophos XGS, we receiving a lot of error messages, but everything works fine so far:



Cannot establish NTLM authentication channel with...

I´ve read all the documentations about NTLM (LDAPS) and checked everything.

Can anyone help?

XGS107w (SFOS 18.5.1 MR-1-Build326)

Thanks a lot.

This thread was automatically locked due to age.

LuCar Toni · Accepted Answer

Do you even use Kerberos? If not, you can simply disable the AD SSO in Zones. It will disable this. Per default, SFOS will try to join the AD to do AD SSO, which is not essentially is needed, if you have other authentication methods.

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Cannot establish NTLM authentication channel with XXX

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