Rolling back the last update
After first update of Kaspersky Internet Security databases and program modules, the option of rolling back to the previous databases becomes available.
At the start of the update process, Kaspersky Internet Security creates a backup copy of the current databases and application modules. If necessary, you can restore the previous databases. Update roll back feature is useful in case the new databases version contains an invalid signature that makes Kaspersky Internet Security block a safe application.
In the event of Kaspersky Internet Security database damage it is recommended to launch update to download a valid set of databases for up-to-date protection.
To roll back to the previous database version: