Unable to handle JavaScript alert popup in PAD

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Posted on by CU09020858-0

Hi everyone,

I’m trying to automate a web process in Power Automate Desktop, but I’m stuck at a JavaScript alert popup. PAD isn’t able to capture the alert window, and I can’t get it to click “OK.”

Details:

Browser: Chrome

Tried: “Click UI element in window” action

Result: PAD doesn’t detect the popup, flow gets stuck

Goal: Close the alert and continue automation

Has anyone handled this scenario successfully? Any tips or alternative approaches would be appreciated.

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Power Automate Desktop

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cwischnewski 162 on at

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It sounds to me like you might be getting hit by an issue with UIA vs MSAA. UI Automation mode is default and it seems that Chrome has changed or been in the process of changing something related to the accessibility modes or something. I never fully understood, but we worked through a ticket and the basic resolution is to change to MSAA for capturing those. When you select Add UI element, in the UI element picker, click the three dots and change from UIA to MSAA. Then try to capture and use those captured elements. If that works for you, you might need to go with that.

We had many automation already in production and found it easier to change something from the launch of Chrome instead of finding and replacing all the UI elements in the bots affected. Since we have one core desktop flow that opened the browser and logged into our application, we could make this change in one place and it fixed all our bots. This change is to launch Chrome from using a Run application action, providing the path to chrome.exe and adding the '--disable-features=UiaProvider --new-window' as arguments.

https://community.blueprism.com/t5/Product-Forum/Blue-Prism-UI-Automation-Failing-after-Chrome-Edge-Update-to-140/m-p/122630/highlight/true

This thread lead me to the this answer.

I would suggest to start with capturing MSAA elements first and see if those work for you. Good luck.

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CU09020858-0 5 on at

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cwischnewski hey thanks for this, i have changed from UIA to MSAA and it worked!!

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cwischnewski 162 on at

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Can you please mark my suggestion as answered?

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