When a company file cannot be opened, QuickBooks Error 6190 happens, usually because the transaction log and company file don't match. Both single-user and multi-user modes are usually affected by this problem, which stops users from opening the file. It can be fixed by synchronizing files and making sure that the network and file access permissions are set up correctly. You can reach a professional at 1.855.738.2784 if you need help with QuickBooks.