Qlik Sense authentication fails with X509N Bad User Name - Login Failures

[Alan_Slaughter]

The Windows Security Event log reports the following event:

event ID 4768, Task Category "Kerberos Authentication Service". Account name for these entries will be "X509N:<S>CN=QlikClient

Resolution: 

Without a Multi-Cloud/Hybrid setup

If you are a customer currently not using a Multi-Cloud/Hybrid setup, meaning you are not distributing Apps from Client Managed into SaaS.

Option 1:

1. Stop the Qlik Sense Services
2. Open the following path: C:\Program Files\Qlik\Sense\Repository\
3. Open Repository.exe.config
4. Set "EnableDotNetWebSockets" to true.
5. If the Qlik Services are running using a non-local administrator account, then bootstrapping needs to be run after the changed configuration. The fix is not supported by Windows 7.

Option 2:

It is possible that the error is still seen after option one is applied.  It is found that due to the current architecture following services are triggering the error:

[hybriddeploymentservice]
[appdistributionservice]
[qib-webchat-service]

If the Qlik Sense environment is not using Multi-cloud deployment, you may apply the following workaround by disabling the following two services:

[hybriddeploymentservice]
[appdistributionservice]

To do this: 

1. Open the file "services.conf" of the Qlik Sense installations (it is typically located at C:\ProgramFiles\Qlik\Sense\ServiceDispatcher).
2. Make a backup of "services.conf" file first
3. Go to the section defining the service in question by adding the row "Disabled=true" like this:
   
   [hybriddeploymentservice]
   Disabled=true
   Identity=Qlik.hybrid-deployment-service
   DisplayName=Hybrid Deployment Service
   ExePath=dotnet\dotnet.exe UseScript=false
   
   [appdistributionservice]
   Identity=Qlik.app-distribution-service
   DisplayName=App Distribution Service
   ExePath=dotnet\dotnet.exe
   UseScript=false
   
   
4. The "Qlik Sense Service Dispatcher" service needs to be restarted for the setting to take effect.

If you are not using Qlik Webchat, you can also disable  [qib-webchat-service] by following same steps as above.

 

With a Multi-Cloud/Hybrid setup

If you are a customer currently using a Multi-Cloud/Hybrid setup, meaning you are distributing Apps from Client Managed into SaaS.

With a multi-cloud setup, there is no complete workaround available as of today. It is important to mention that this is not an issue that affects in any way your security and/or stability of your Client Managed deployment. This is a result of how affected Qlik Sense .NET microservices are handling certificates in .NET Core technology. To address this shortcoming, a significant re-design of current architecture would be required that is currently not in the pipeline, hence would recommend submitting a product ideation.

To limit the number of events in question, if you are not using Qlik Webchat, you can disable  [qib-webchat-service] - see step-by-step instructions in the previous section.

Environment:

Qlik Sense Enterprise on Windows  

Internal Investigation ID(s):

QLIK-87774, QB-274. Working as intended, please apply the resolution given in this article. 

[fabdulazeez]

One of our clients has reported he issue from domain controller. User Name - X509N:<S>CN=QlikClient;

Event Type : Failure ; Failure Reason- Bad User name.

I have applied resolution 1 and the error was repeating. So I applied resolution 2 . 

Is this issue specific to any Qlik version? What should b my next step , if the error persists?

[Sonja_Bauernfeind]

Hello @fabdulazeez 

Please post your question in our active forums to make use of our active user base and the support engineers monitoring our forums. 

The correct forum is: Deployment and Management.

[diwakarreddy]

Hi Alan_Slaughter,

We have the same issue reported from our domain controllers.

We have applied the mentioned two solutions and issue still exists in our proxy server.Though we don't have any issues with the qlik environment.Failed login requests are causing performance issues in domain controller.

Could you please suggest an alternate approach.

Thanks & Regards

Diwakar

[Sonja_Bauernfeind]

Hello @diwakarreddy 

If this does not resolve the issue, then you are likely looking at a different root cause. I would recommend posting about the issue in our community (Qlik Sense Management and Deployment ) or contacting support directly should that help you resolve the issue.

All the best,
Sonja 

[fmarvnnt]

Thank you for the article.  It fixes the issue on Aug 2023 P6 version too!

FMa