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SSH Tectia

Authentication Fails for Domain Account on SSH Tectia Server on Windows

Symptom: User authentication fails for domain accounts on SSH Tectia Server.

This problem could be caused by a number of reasons:

Start the troubleshooting by checking that you are able to log in to the Windows host where the Tectia Server is installed. Attempt the login at the console using domain accounts. Additionally, check that the Windows host where the Tectia Server is installed can reach the Domain Controller. While Windows allows you to log in (by using cached passwords) at the console even when the Domain Controller is down, SSH Tectia Server requires active communication with the Domain Controller in order to authenticate domain users.

Another possible cause for this is having additional groups in the "Pre-Windows 2000 Compatible Group" on the Domain Controller. Some Windows updates, such as the multilanguage pack, can result in adding entries to this group, which breaks the mapping for the groups' SIDs, and the SSH Tectia Server is no longer able to create access tokens for the domain users. In order to prevent this, check on the Domain Controller that the "Pre-Windows 2000 Compatible Group" contains only the "Authenticated Users" group.

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