topic Re: Talend Studio not able to connect different components in Talend Studio

Talend Studio not able to connect different components

igoralcantara — Tue, 02 Dec 2025 21:38:21 GMT

I have seen this error in different versions of Talend Studio and not sure how to reproduce it or how to fix it. It occurs in different machines, including on the VM provided by Qlik as part of Talend Studio training. I have now this problem in 2 computers: mine and Qlik's VM.

Let's say you have two or more components added to a job. It does not matter what component; it happens with any of them. You want to connect these components using things like Row or Trigger. So, you go to the first component, right click on it, pick Row and then Main. You expect a line to show up for you to drag it to the second component and have them linked. Well, no line shows up and even if you pretend there is a line and simply click on the second component, nothing happens. Nothing at all. No error, just no line and no connection. The same happens if you use the Trigger option instead of the Row. Basically, any option that we use to connect one component to another.

It is not a temporary error. Once it occur, it will occur until the end of the universe when the entropy turns everything into eternal darkness. It does matter what you do. I tried closing and opening studio, restarting the whole computer, resetting the perspective, even uninstalling and installing Talend Studio again. I tried praying, singing, smiling and crying. Nothing works. Not even conjuring old spirits in a sacred ritual works.

When that happens, another weird thing also happens. Do you know when you type the name of a component in the Designer? If I do it, I can see the list of components, but if I click or Double Click on the component to add to the job, nothing happens. However, this is not so critical, since I can still drag the component from the pallet.

Any clues on the cause of the problem or how to fix it? Am I cursed?

Version information (this one is Qlik VM):

Talend Real-time Big Data Platform
Version: 8
Build id: 20250114_1545-patch
OS: Windows Server 2019, v.10.0, x86_64 / win32
Java vendor: Azul Systems, Inc.
Java runtime version: 17.0.14+7-LTS
Java version: 17.0.14

Version information (this one is my machine):

Talend Cloud Data Fabric
Version: 8
Build id: 20250521_1150-patch
OS: Windows 11, v.10.0, x86_64 / win32
Java vendor: Azul Systems, Inc.
Java runtime version: 17.0.10+7-LTS
Java version: 17.0.10

Re: Talend Studio not able to connect different components

pablolabbe — Tue, 02 Dec 2025 22:00:01 GMT

Stranger things happening in Talend Studio...

Re: Talend Studio not able to connect different components

Xiaodi_Shi — Wed, 03 Dec 2025 01:36:06 GMT

Hello,

It looks like studio installation issue.
Does re-install talend studio help ? No error message in studio log?

Best regards

Sabrina

Re: Talend Studio not able to connect different components

igoralcantara — Wed, 03 Dec 2025 13:54:06 GMT

Yes, it does not work. It does not work even in the VM provided by Qlik.

Re: Talend Studio not able to connect different components

Xiaodi_Shi — Thu, 04 Dec 2025 01:23:03 GMT

Hello @igoralcantara
Could you please raise a support case for your current issue? In this way, our collegues from customer support team could give a remote assistance to you via zoom meeting through support cycle with priority.

Best regards

Sabrina

Re: Talend Studio not able to connect different components

igoralcantara — Thu, 04 Dec 2025 02:42:44 GMT

Sure thing.

Re: Talend Studio not able to connect different components

Xiaodi_Shi — Thu, 04 Dec 2025 09:42:41 GMT

Hello,
It would be great if you could post the root cause here.
Thank you.

Best regards

Sabrina

Re: Talend Studio not able to connect different components

igoralcantara — Thu, 04 Dec 2025 12:46:58 GMT

Sure, as soon as I identify it, I will do it.

Re: Talend Studio not able to connect different components

igoralcantara — Thu, 04 Dec 2025 13:08:11 GMT

Support Ticket created. I will update this thread once we have/or have not, a solution.