QuickBooks error H505 is typically a Company file linked issue which generally manifests when the user tries transferring the company files to a PC not meeting the minimal system requirements mandated for the operations of the QuickBooks program. Other major source of this error and other errors belonging to the Hxxx series of error codes is the changed location of the company file, or impediment caused by some conflicting program running at the backend.
Without any adieu, let us venture onto the various causes and effective troubleshooting approaches to resolve QuickBooks Error Code H505.