When a user tries to view a company file in a single-user mode while it is being utilized by another user, QuickBooks Desktop Error 6190 typically arises. A difference between the business's file and the transaction record file, or a conflict in file access freedoms, is indicated by this error. The easiest way to fix it is to use the QuickBooks File Doctor tool, verify that you are in single-user mode, and verify your network connection. For instant assistance contact to our QuickBooks Experts Team at 1.855.738.2784.