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Error 1601 when updating QuickBooks Desktop

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

Why this is happening

This error can be caused by:

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

Important: Ensure that your firewall or antivirus is set properly to allow QuickBooks Desktop components to run on the background. Intuit recommends more than one solution to resolve this issue. For best result, please follow the steps in order shown below.

KB ID# SLN41921
12/3/2016 7:56:29 PM
QYPPRDQBKSWS07 9138 Pro 2017 d1dd33