QuickBooks Error 6123 0 occurs when users try to open, restore, or update a company file. It’s often caused by corrupted files, network issues, or problems with hosting settings. This error disrupts access to business data, requiring troubleshooting steps like renaming files, disabling antivirus, or using the QuickBooks Tool Hub. link-https://crivva.com/article/quickbooks-error-6123-0-how-to-troubleshoot-it/