You can use these procedures to resolve QuickBooks Error Code H202 . Installing or updating QuickBooks Database Server management from your host PC is the initial step. Examine your server's services in addition. Now on your host system, add services to the Windows admin group. On your host PC, configure the firewall as well. Ping your server from a workstation as well. Add your server to the Windows hosts file to finish. It is advisable to assign your IT specialist the aforementioned duties.