You could follow the steps below to install and enable Client Integration Plugin.
1. Change security settings of local intranet to low.
2. Add vCenter server certificates to the trusted Root Store.
3. Install with administrator permissions.
You would have to perform the changes on the Internet Explorer as the Chrome is integrated and uses the settings from IE.
menu > Settings > Show advanced settings > Content settings. Under the Flash section, click “Manage exceptions”.
You’ll see a list of websites that you’ve either given permission to run Flash, or prevented from running Flash. To revoke Flash permissions from a website and set it back to click to play mode, click the “x” button to delete the website from this list or change its behavior back to “Ask” using the dropdown box.