Installation Issues

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Hi, I purchaased Adobe Acrobat DC and have attempted numerous times to install it. The error message keeps repeaating that I close Microsoft Word and Outlook  They are closed. I've used Task Manager to check for background processes as well. 

Any suggestions? Thanks, Alana

[Govardhan.V]

What is the Windows version?

Once you launch  Task Manager go to Details tab and check once .