QuickBooks is very easy to understand and operate by non technical users. However, when users try to go deep into the technicalities they find themselves in a complicated situation that creates hurdles for them. For instance, when users try to switch to multi-user mode, they end up facing QuickBooks Error H505 which stops their work until the issue is fixed. On getting such errors, customers are advised to contact QuickBooks support immediately as this issue is caused when more than one system is acting as the server or user tries to switch to multi-user mode from a workstation other than the server where the company file is stored. To fix this issue in the minimum possible time and the best way possible, reach out to the experts now.