This usually occurs when:
• A browser extension pop-up is open.
• The web page is loaded with a pop-up/modal that prevents normal attachment.
• UiPath is trying to use the Chromium API method but is being blocked.
Solutions:
Close any Extension Pop-Ups
Make sure no extension pop-up (like password managers, ad blockers, etc.) is open when the automation runs.
Use a Different Input Method
In the Type Into activity:
• Go to Properties Panel → Set Input Mode to:
• SimulateType or
• SendWindowMessages
This avoids using Chromium API directly and may bypass the issue.
