When a company file won't open, QuickBooks Error 6189, 816 happens. This is frequently the result of file corruption, network problems, or incorrect shutdowns. Users may see error messages or crashes when attempting to access data. To fix it, you must update QuickBooks, check the integrity of the files, or restore a backup to guarantee seamless accounting activities. To get expert QuickBooks phone support, dial 1.855.738.2784.