A Complete Guide to Rectify QuickBooks Error H505 Among the most famous accounting software comes QuickBooks Desktop, which many companies use worldwide to keep track of their everyday business activities, including managing income and expenses. Using QuickBooks Desktop, a company can quickly generate multiple financial reports, which can help it in proper planning and tax filing. However, such an exemplary profile doesn’t mean that QuickBooks Desktop is perfect. Despite being equipped with several defense mechanisms, QuickBooks Desktop is not free from errors and bugs. QuickBooks error H505 is one such error.
What does QuickBooks error H505 signify? QuickBooks error H505 occurs when a user attempts to switch QuickBooks Desktop to multi-user mode.