http://gsi.kaspersky.fr/lire.php?hl=en&...bd0c460a281#Top

As per topic, the KAV for Server was working fine and then it just suddenly disabled by itself.

From the GSI, i could not find anything wrong about this.

Any ideas?

KAV for FS not running or running but all Protection is disabled?
Check License status and local date|time settings.

set server time and date settings or check this again, if date and time are correct. check key file for expiration, otherwise try to activate the product again with proper key file