QuickBooks is accounting software. QuickBooks has many advantages, but sometimes it faces technical error also, "QuickBooks error code 6210" is one of them. This error mostly occurs in Multi-User Mode. The error occurs while using the company file hosted on a workplace and is not set up as the network server. In the linked article, we Discuss all the troubleshooting guide to fix QuickBooks error code 6210. If you have any other query related to QuickBooks error, you can call our QuickBooks technical support number on 855-948-3651 to get assistance.