The previous notification is related to the following two Virus signature database update ended with an error messages about unsuccessful updates:
1. Invalid Username and/or Password – The Username and Password have been incorrectly entered in update setup. We recommend that you check your authentication data. The Advanced setup window (click Setup from the main menu and then click Enter advanced setup..., or press F5 on your keyboard) contains additional update options. Click Update > Settings in the Advanced setup tree to enter a new Username and Password.
2. Server not found – A possible cause of the error is incorrect Internet connection settings. We recommend that you check your Internet connectivity (by opening any website in your web browser). If the website does not open, it is likely that an Internet connection is not established or there are connectivity problems with your computer. Please check with your Internet Service Provider (ISP) if you do not have an active Internet connection.