QuickBooks error 6190, 816 is witnessed when several users try to open the company file in the single user mode. 

The prominent reasons for this error to happen are:

  •  Another user trying to access a company file..
  •    Data file is corrupted.

What are the ways to resolve the QuickBooks Error 6190, 816?

First you will have to download the QB file doctor tool and run this tool, it will fix error 6190, 816 and you have to login as administrator.

Hopefully, this basic troubleshooting will help you in fixing the QuickBooks error 6190, 816.For more help, call QBSsolved at +1(888) 910 1619.