How to Fix QuickBooks Error 6000 When Opening a Company File?
https://quickbookhelpdesk.com/blog/quickbooks-error-6000-when-opening-company-file/
QuickBooks Error 6000 can appear when you try to open a company file in QuickBooks Desktop. Instead of opening the file, QuickBooks displays an error message and prevents you from accessing your financial data. The error can happen when the company file is stored on your computer or on a network. Common causes include problems with the file location, damaged configuration files, incorrect hosting settings, network issues, or a damaged QuickBooks installation.