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