Hi Allessandro, When you are using SNMP++v2.8a instead of SNMP++v3 then you will have to #undef _SNMPv3 in agent++/include/agent++.h Regards, Frank Mauro Restante wrote: > Hi to all, > > We are working with Agent++ v3.4 (and SNMP++v2.8a of course) with M.V Studio > 6.00 . >