This error usually appears when you attempt to open a company file. An error message box will appear on your Computer screen telling you about the error. It might keep you away from access to your company file. You can read this with regards to the absolute most reliable approaches to fix QuickBooks Error 6000 .
Quickbooks Error 6000 is an error of a 6000 series/family error that occurs when the user tries to open the company file in multi-user mode. This will occurs because of some of the reasons:-
If the multi-user access to the company file is blocked by the firewall.
Because of corrupted TLG file.
If the installation of Quickbooks is corrupted.
The setup of the network is improper.
It should also be possible that the file of the company was corrupted.