To rectify the Quickbooks error 6129 it is imminent to know the causes that have led to this issue. So What are the main causes and the solutions to this error?
Solution 1: Login as a Windows Administrator First, try opening a company file. Log into Windows as a “System Administrator” to update the company file required. If you cannot log in as an Administrator, find support for Windows and an IT professional for help.
Solution 2: Disable Antivirus and other Software in case you use Windows in Safe Mode Restart the computer in “Safe Mode” Disable the active antivirus software. Create a new Company File. Again restart the computer in Normal Mode. Open QuickBooks and the Company File.