How to Fix QuickBooks Error 121

QuickBooks Error 121 usually points to issues related to outdated payroll updates or system misconfigurations. To resolve it, make sure your QuickBooks software is up to date, check your internet connection, and verify your system date and time settings. Also, ensure that your firewall or antivirus isn't blocking QuickBooks services.

For step-by-step guidance, you can reach QuickBooks support at 1-866-996-5535. They offer 24/7 help via in-app chat or callback through the QuickBooks website. Just go to Help > Contact Us, sign in, and choose the support method that works best for you.