While you are Opening a company file from the network server or doing a backup , sometimes you may encounter QuickBooks Error 6123. Damaged company data file, disrupted network connection , firewall settings interrupting QuickBooks etc. are some of the reasons leading to QuickBooks error code 6123. Get all your answers at QA Solved.com with the best possible solutions to resolve this issue. Alternatively, you can speak to a Proadvisor at QuickBooks support number for immediate troubleshooting. Get the best and round the clock solutions for Quickbooks queries.