The issue of QuickBooks Error H505 generally arises when there's a group - from multi user hosting within the system where the QuickBooks is installed. The user here, during this case, tries to access that QuickBooks file which is installed on another computer. For fixing the difficulty with the QuickBooks software, you'll make a replacement company folder for storing the QuickBooks related file. Aside from this, you'll also open the network ports that you simply QuickBooks use to transmit knowledge. Check the hosting and services after this. you'll also take the expert and professional help for fixing the difficulty with ease within no time.