https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79143#M31086 try to use handle. one handle for every excel instance. Open each excel file in one handle.  Let me know if that works Wed, 27 Dec 2017 10:03:00 GMT KarthickSivabal 2017-12-27T10:03:00Z https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79141#M31084 I need to send the key strokes to excel file for the data manipulations. Currently, I'm able to send the desired keystrokes to one excel file successfully. However, when I try to work with multiple excels, I'm unable to attach the proper excel file to Blueprism. Could anyone pls help me with this? Thanks, Shashi Sat, 09 Dec 2017 23:24:00 GMT https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79141#M31084 ShashiK_R 2017-12-09T23:24:00Z https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79142#M31085 By default recent versions of Excel share processing threads accross multiple Excel workbooks. That will mean that when Blue Prism attaches it is attaching to multiple document sharing a single process. I recommend you google search how to open excel documents in seperate window threads as a starting point for your investigating a solution to your issue. Fri, 15 Dec 2017 16:52:00 GMT https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79142#M31085 Denis__Dennehy 2017-12-15T16:52:00Z https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79143#M31086 try to use handle. one handle for every excel instance. Open each excel file in one handle.  Let me know if that works Wed, 27 Dec 2017 10:03:00 GMT https://community.blueprism.com/t5/Product-Forum/Creating-Application-Modular-To-Interact-With-Excel-File/m-p/79143#M31086 KarthickSivabal 2017-12-27T10:03:00Z