GFI (Kerio’s parent company) provides upgrade assistance through their support portal, and the community forum at community.kerio.com has active 9.4.2 discussion threads.
: Restored missing VMware images that were absent in the initial 9.4.2 rollout. How to Upgrade kerio control 942 upd
Beyond new features, version 9.4.2 addressed several legacy issues that affected performance: kerio control 942 upd