If you want to automate your process in the Internet Explorer, you need to consider a few settings.
In first instance make sure to have chosen "Selenium" as Web Automation Provider when opening the IE with the Open Browser Activity.
In addition, you need to adapt some configuration of your browser´s internet options.
Please follow these steps:
Open Internet Explorer.
Go to Tools menu – Internet Options.
Select tab Security.
In Select a zone to view or change security settings choose Internet and activate the checkbox of Enable protected mode (requires restarting Internet Explorer).
Similarly, select the check box of Enable protected mode (requires restarting Internet Explorer) for other three options such as Local Intranet, Trusted sites, and Restricted sites.