The 152 error code means “licensing problem”.

The rule here is that the Kerio product number of licenses must be smaller or equal to the number of avast licenses (i.e. for instance if KWF is for 20 users, avast for Kerio must also be (at least) for 20 users).

The KMF & KWF licenses are not summed. I.e. it’s OK to have KMS for 20 users, KWF for 20 users, and avast for 20 users (not 40).

Thanks
Vlk