Symantec Endpoint Protection Manager displays an error message on the Home and Reports pages: "This program cannot display the webpage."
Localhost is not in Trusted Sites in Internet Explorer.
Add localhost to Trusted Sites in Internet Explorer.
In Internet Explorer, go to Tools > Internet Options.
On the Security Tab, click Trusted Sites > Sites.
Under Add this website to the zone, type "localhost".
Uncheck Require server verification (https:) for all sites in this zone.
Click Close, and then click OK.
Close Symantec Endpoint Protection Manager, and open it again.