QuickBooks error code 12007 generally occurs when system files are not configured correctly and it causes registry errors in your operating system. If you too have received QuickBooks Update Error Code 12007, this post will help you resolve it. Also, this post is created to offer you an understanding of this error as well as the reasons for its occurrence. To solve the error follow the given steps here. Step 1: Use Internet Explorer as Your Default Browser Step 2: Check Internet Explorer Settings Step 3: Remove QuickBooks Program from Windows Firewall Step 4: Add an Outbound Rule in Windows Firewall Settings Step 4: Exclude QuickBooks Program from Antivirus Step 5: Scan System Files Step 6: Reinstall QuickBooks using Clean Install Tool Step 7: Adjust QuickBooks Payroll Update Services Step 8: Reset Internet Browser Step 9: Edit QuickBooks Updates Step 10: Launch Windows in Safe Mode with Networking