Ouch. To make things even worse, the executable 'kaspersky_tcpip_fix.exe' to fix the problem is (1) not delivered over HTTPS and (2) not signed by Kaspersky (it is unsigned). So not only are you unable to receive an authenticated update to your antivirus database to fix the problem because your network is down, but you have no assurances that the offline tool provided to you to fix the problem actually came from Kaspersky.

For those that are curious, you can use a tool distributed by Microsoft called Sigcheck to display signature information (http://technet.microsoft.com/en-us/sysinternals/bb897441.asp...).