Hi @Pierluca Di Conza ,
Installing the Replication feature from an English SQL Server 2014 installer onto an Italian-language SQL Server 2014 Standard Edition can cause language mismatch issues because SQL Server setup checks for language compatibility. If the base installation is Italian, the English installer may refuse to proceed.
Microsoft does not recommend mixing language versions. If issues arise later, support may be limited or require reinstallation with matching language media.
Hope this helps!