How to Troubleshoot QuickBooks Error 12002 Quickly When the program is unable to connect to the internet for updates, QuickBooks Error 12002 appears. This is frequently caused by network problems, firewall limitations, or proxy settings. In order to restore regular QuickBooks operation, users must verify their internet connection and security settings as this issue may interfere with the download of payroll or application updates. For quick help, give QuickBooks experts a call at 1.855.738.2784. URL: https://blogsubmissionsite.com/blog/details/troubled-by-quickbooks-error-12002-here-are-the-solutions