Install this on the server that runs your accounting system. It connects that system to hh2 and keeps your data in step.
This machine looks like 32-bit , so that package is marked recommended below. Choose to match the server you are installing on, not the machine you are browsing from.
Every hh2 program is digitally signed by hh2 Cloud Services. Windows shows that name as the verified publisher when you run the installer. If it does not, do not install it — contact hh2 support instead.