Error 1601 when updating QuickBooks

When updating QuickBooks, "Error 1601" occurs. . The update does not complete.

This error can be caused by:

• A firewall blocking access to some QuickBooks components.
• A damaged esgservices.dat file
• A damaged .net component

Refer to Settings required for firewalls, internet security and parental controls for QuickBooks updates and network access for steps to edit firewall settings to allow QuickBooks traffic.

If the error still occurs, replace the esgservices.dat file:

1. Restart the computer.
2. Complete only Step 1 of the steps in Performing a "clean install" or "clean uninstall" of QuickBooks for Windows to uninstall QuickBooks.
3. Follow the steps in Repairing or reinstalling Microsoft .NET Framework 1.1 or 2.0 to repair your version of .net Framework.
4. Return to Performing a "clean install" or "clean uninstall" of QuickBooks for Windows and complete the remaining steps of the article to reinstall QuickBooks.

Note: Renaming the Program Files\Intuit\QuickBooks folder for your version is critical to a successful resolution of this issue.

5. Open a sample file in QuickBooks.
6. From the QuickBooks Help menu, select Update QuickBooks, and then select Update Now.
7. Close the program and re-open again.
8. If the QuickBooks Update Service window is displayed, click Install Now.

If this solution does not resolve the issue, you can read discussions and post messages and questions relating to your issue on the Intuit QuickBooks Community site. . You can also review other available QuickBooks support options for additional guidance.