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Solved: How do I fix Poll Active Directory (FSSO) connection status down despite authentication successful?

This article illustrates the issue where the connection status to AD is successful, but the AD connector status is down.

Connection status to AD is successful

AD connector status is down.

The connector settings are configured as below:

The connector settings are configured,

It is possible to run debug to check for the error message:

# diag deb authd fsso -1
# diag deb en

An error message appears for ‘wrong format of data status, len 8 <> 4’.

Although, it is possible to see that the authentication is successful:

Although, it is possible to see that the authentication is successful.

Solution

The username in FSSO Connector Settings should not include the domain. Once removing the domain portion from the Connector Settings, the domain was removed:

The username in FSSO Connector Settings should not include the domain. Once removing the domain portion from the Connector Settings, the domain was removed.

Turn on the debug to verify if the connection is proceeding accordingly:

Turn on the debug to verify if the connection is proceeding accordingly.

Based on the above debug log, it is possible to see that LOGON info is correctly transmitted.

FortiGate GUI is also showing that the connector connectivity is up and successful:

FortiGate GUI is also showing that the connector connectivity is up and successful.

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