Error 6210 occurs in QuickBooks while programming installation. If you are facing Error 6210 in QuickBooks then go through these steps: · Fix the registry entries associated with error 6210 · Use an Antivirus software and perform a full system scan to remove the virus or malware from the computer. · Delete unwanted files from your computer. · Uninstall outdated drivers from your computer and install the latest drivers. · If all the above steps don’t work then perform a reinstall process. Talk with experts available on QuickBooks payroll customer care number, if you still face this error.