https://community.qlik.com/t5/Management-Governance/X509N-lt-S-gt-CN-QlikClient-quot-Kerberos-Authentication-Service/m-p/1947074#M22518 <P>Hello&nbsp;<a href="https://community.qlik.com/t5/user/viewprofilepage/user-id/29922">@diwakarreddy</a>&nbsp;,</P> <P>Kindly review the information on&nbsp;&nbsp;<A href="https://community.qlik.com/t5/Knowledge/Qlik-Sense-authentication-fails-with-X509N-Bad-User-Name-Login/ta-p/1713937" target="_blank">Qlik Sense authentication fails with X509N Bad Use... - Qlik Community - 1713937</A>&nbsp;to have a full overview on this topic.</P> <P>Cheers,</P> <P>Albert</P> Wed, 22 Jun 2022 19:59:29 GMT Albert_Candelario 2022-06-22T19:59:29Z https://community.qlik.com/t5/Management-Governance/X509N-lt-S-gt-CN-QlikClient-quot-Kerberos-Authentication-Service/m-p/1946343#M22510 <P>Hi All,</P> <P>We are in Qlik sense Feb 2022 version and are notified by the windows administrators about the below issue in domain controllers.</P> <P>X509N:&lt;S&gt;CN=QlikClient "Kerberos Authentication Service" Event Type : Failure ; Failure Reason- Bad User name&nbsp;</P> <P>&nbsp;</P> <P>Though we don't have any issues in Qlik environment but the failed logins are causing performance issues in domain controllers.About 66000 failed logins are reported daily.</P> <P>Can anyone help me with the issue.</P> <P>Thanks</P> <P>Diwakar</P> <P>&nbsp;</P> Tue, 21 Jun 2022 15:26:31 GMT https://community.qlik.com/t5/Management-Governance/X509N-lt-S-gt-CN-QlikClient-quot-Kerberos-Authentication-Service/m-p/1946343#M22510 diwakarreddy 2022-06-21T15:26:31Z https://community.qlik.com/t5/Management-Governance/X509N-lt-S-gt-CN-QlikClient-quot-Kerberos-Authentication-Service/m-p/1947074#M22518 <P>Hello&nbsp;<a href="https://community.qlik.com/t5/user/viewprofilepage/user-id/29922">@diwakarreddy</a>&nbsp;,</P> <P>Kindly review the information on&nbsp;&nbsp;<A href="https://community.qlik.com/t5/Knowledge/Qlik-Sense-authentication-fails-with-X509N-Bad-User-Name-Login/ta-p/1713937" target="_blank">Qlik Sense authentication fails with X509N Bad Use... - Qlik Community - 1713937</A>&nbsp;to have a full overview on this topic.</P> <P>Cheers,</P> <P>Albert</P> Wed, 22 Jun 2022 19:59:29 GMT https://community.qlik.com/t5/Management-Governance/X509N-lt-S-gt-CN-QlikClient-quot-Kerberos-Authentication-Service/m-p/1947074#M22518 Albert_Candelario 2022-06-22T19:59:29Z