Virus definition not updating
Type cd /d “\Program Files\Windows Defender” into the Command Prompt and press the Enter key.
Type exe -signatureupdate into the Command Prompt and press the Enter key.
Traditional signature and heuristic file scanning engines form the backbone of Symantec’s security solutions; these engines use dozens of techniques to scan files for both known as well as unknown threats.
Technologies designed to block attacks just as they transition from the network cable or wireless network to the computer, before they have a chance to establish residency in a physical file on a user’s computer. Behavioral-based protection technology observes actively running threats on your computer and can terminate running programs if they exhibit malicious behaviors; this technology provides proactive protection from entirely new, previously unseen attacks.
Step 3) Remove Live Update and install the correct version for SEP - Uninstall "Symantec Live Update" from the Windows Control Panel, - Reboot the server, - Install the Live Update shipped with your release of Endpoint Protection.
Step 7) Monitor System Allow 24 hours to verify that Live Update is now working properly.
Monitor the system for a few days to ensure that updates are downloaded and installed properly.
Your computer will now check for any and all available updates.
In the Win X Menu, click on Command Prompt (Admin) to open an elevated Command Prompt.