Fix QuickBooks Error H505 Without Losing Data An incorrect hosting configuration results in QuickBooks Error H505 when a user attempts to view a company file on a different computer. This error usually means that contact with the server hosting the file is not possible because of blocked ports, missing network services, or a problem with the multi-user configuration. Network settings troubleshooting can fix it. Please give 1.855.738.2784 a call if you need expert QuickBooks guidance and support. Read more :https://accountinghelplinesupport.weebly.com/blog/quickbooks-error-h505-highly-detailed-troubleshooting-guide