Hi Umang,
We have two programs with similar names. EOS Webcam Utility is for livestreaming, but it won't work if EOS Utility is running, even if it is running in the background in the system tray. Check the icons on the bottom right of your screen and right click on any EOS Utility icons and close them.
After doing that, check the Wi-Fi setting in the camera's menu and make sure it is turned off. Otherwise the camera's USB port won't be active, and EOS Webcam Utility needs a USB connection.
Then make sure that the camera is set to shoot movies, not photos.
It might also help to try disconnecting other accessories from the computer and to try different USB ports, since some USB ports can be stronger than others.
