Under "Latest Definitions from Symantec" in Symantec Endpoint Protection Manager (SEPM), you see "Information is Currently Unavailable" instead of the most recently published definitions.
This problem can be caused by one of the following:
Endpoint Protection Manager cannot connect to the Internet.
A proxy or firewall is preventing Endpoint Protection Manager from connecting to external Symantec web sites.
Internet Explorer (IE) Enhanced Security Configuration is enabled.
Since this problem can have multiple causes, check each of the following:
Check Internet connectivity
Endpoint Protection Manager uses data downloaded from the Symantec Security Response web page to update the "Latest from Symantec" section on its home page. If you cannot connect to the Internet on the computer where Endpoint Protection Manager is installed, this section will not be updated.
Confirm proxy and firewall settings
If you are using a proxy server or firewall in your environment, ensure that Endpoint Protection Manager has free access to the following URLs:
Disable IE Enhanced Security Configuration
Refer to the Microsoft documentation for your operating system to determine how to disable IE Enhanced Security Configuration.
Check access to the securityresponse.symantec.com URL
At the Windows Command Prompt, run the command nslookup securityresponse.symantec.com. This should return the server IP address as shown in the following example.
You should also be able to access the following URL directly: