How to Fix QuickBooks Error 6000? (When Opening a Company File)

Description

To fix QuickBooks Error 6000 when opening a company file, first, ensure QuickBooks is updated to the latest version. Then, use the QuickBooks File Doctor tool to repair any corrupted company files. If the error persists, verify that hosting is enabled only on the server and not on other workstations. Check your firewall settings and configure them to allow QuickBooks to function correctly. Lastly, rename the .ND and .TLG files associated with the company file to rebuild them.