Quick Solutions To Rectify QuickBooks Error 6073 When you attempt to open a business file that is already open in single-user mode on another computer, QuickBooks Error 6073 appears. Incorrect file permissions or problems with remote access might also cause this problem. Checking folder settings or switching to multi-user mode frequently fixes the issue. To speak with a knowledgeable and experienced QuickBooks phone support specialist, dial 1.855.738.2784. URL:https://hackmd.io/@markwilliam8506/how-to-deal-with-quickbooks-error-6073