To logon to the Sag300WebApi successfully you will need to ensure the below checklist:

Security Rights:

• If using the Admin User ensure the user has been allowed access to the WEBAPI (Please refer to KB article 92825)

  • Modify web.config file in both Web folder and WebApi folder

    • Online/Web/Web.config
    • Online/WebApi/Web.config

    <add key="AllowWebApiAccessForAdmin" value="false" /> change from false to true.

• Else for any other user ensure that the user ID has the Sage 300 WebAPI rights in Security Groups in Common Services.

IIS & Logon to WebAPI:

• Disable Windows Authentication for the Default Site in IIS for Sage 300 WebApi
• When prompted with logon credentials, ensure both username and password are captured in ALL CAPS.

If the above are not in order you may struggle to connect.