Hi @UshaJyothi20
There is no native action to close the opened PDF
You can use Send Keys Action and pass Alt + F4 to close entire Acrobat window
Or else you can pass Ctrl+W where it will close only the file window but the Acrobat window remains same but it will open the Next File
According to you requirement you can pass on of those
If those not works then use Terminate Process to kill the Acrobat Reader, but suggest to try above
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Thanks,
Srini