Solving Pop-up dialog issue with Katalon Studio

When performing automation testing, you may sometimes deal with pop-up dialog issue that needs to be handled differently from normal test objects. This tutorial shows you how to deal with pop-up controls.

What is a pop-up?

A pop-up is a graphical display area, usually in a form of a small window that appears (“pop-up”) in the foreground of the current interface.

What are issues with pop-up?

The problem with pop-ups is that they usually show up unexpectedly. There is no certain way to overcome this except that you need to understand the behavior of the application and insert scripts accordingly to handle the situation. Another issue with pop-ups is that they are not from the AUT so you need to handle them with dedicated keywords.

Below are a few commonly used pop-ups which might cause problems in your test web automation:

  • New browser window.
  • Alert: An alert box is often used to make sure that information comes through to the user.

Alert box Katalon Studio

  • Custom modal dialog: A modal dialog is a dialog box/pop-up window that is displayed on top of the current page.

Custom modal dialog

  • Native Window dialog. This dialog is common in case of testing uploading files

Native Window dialog

A suggested solution for handling pop-ups using Katalon Studio:

To handle such pop-ups as described, you need to capture them first using the Object Spy feature in Katalon Studio. After that, you use “Switch To…” keywords of Katalon Studio to set focus to the specified pop-up as needed.

The following screenshot shows simple scripts on how to handle a pop-up using the Switch To Window Title keyword.

Solving Pop-up dialog issue


Keyword Description
Switch To Window Title Switch to the window identified by a given title.
Switch To Window Index Switch to the window identified by a given index.
Switch To Window Url Switch to the window identified by a given URL.

If you want to switch back to the default window (parent), use the Switch To Default Content keyword. For example:


Keyword Description
Switch To Default Content Switch back to the default window, after working with iFrame windows.

To deal with Windows’ native dialogs such as uploading files, users use the 
Upload File keyword. For example:


Keyword Description
Upload File Specify the file for the upload dialog.

Regarding the browser’s popups as mentioned above, you can modify Desired Capabilities of the browser to prevent them from displaying. You can refer to this ticket for an example on how to disable the Chrome password manager.


Here in this example, When I clicked a link, it will open a new window. So I want to switch to that window to perform actions on the newly opened window. We can handle it using Katalon Studio built-in keywords as shown below.

Switch to Window Index:

We need to use it when you want to switch to the second window (index 1).

Manual Mode:

Switch To Window Index

Script Mode:

Switch To Window Title :

Switch to the window with given title.

Manual Mode:

Switch To Window Title

Script Mode:

Switch To Window Url :

Switch to the window with given URL.

Manual Mode:

Switch To Window Url

Script Mode:

That is some examples of how we handle window using Katalon Studio. You can download the source code here.


Noted that NoSuchWindowException exception will be thrown when window target to be switched doesn’t exist.


For further instructions and help, please refer to [WebUI] Window and join us on Katalon Forum.


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