Why QuickBooks Error 1603 Happens & How To Get Over It?

From tracking inventory to creating bills, QuickBooks single-handedly takes care of all the accounting activities of a company. Being equipped with so many features and tools, QuickBooks is truly an exemplary bookkeeping application. However, regardless of how good QuickBooks is, we can’t deny the truth that using it is not free from errors and technical bugs. Through this post, we are going to explain QuickBooks error 1603, which many users get while installing QuickBooks Desktop on their computers. Numerous reasons can lead to QuickBooks error code 1603, which you will read below in this post, along with their troubleshooting ways.

Getting frustrated with QuickBooks error 1603 and want to get it fixed instantly? If yes, don’t hesitate to speak with our QuickBooks technical team at +1-855-856-0042.

QuickBooks error 1603 appears on the desktop screen with the following message: “The update installer has encountered an internet error.”

Why does QuickBooks error code 1603 take place?

QuickBooks error code 1603 usually occurs when the QuickBooks program files are corrupted. Nevertheless, there can be other reasons as well that can trigger it, like:

  1. Windows operating system needs updation as it has been outdated for too long.

You may like to see: QuickBooks Error 6190 and 816

What can you do to troubleshoot QuickBooks error 1603 safely?

Solution 1: Get the latest updates for your Windows operating system

  1. Press the Windows icon key on your keyboard to unfold the Start menu.
  2. Search for the Settings option.
  3. Click on the Update & Security option.
  4. From the left-sidebar, choose the Windows Update option.
  5. Then select the Check for updates option.
  6. If you find any updates for your Windows operating system, go through the on-screen directives to install them.
  7. After updating your Windows operating system, check whether you are able to install QuickBooks Desktop.

If you get QuickBooks error 1603 this time also, follow the second solution.

Some short solutions you can find helpful in resolving: QuickBooks connection has been lost

Solution 2: Use QuickBooks Install Diagnostic Tool for fixing QuickBooks program files

  1. Open the site of Intuit and download QuickBooks Tool Hub of the modern version ( from there. It is recommended to save the QuickBooksToolHub.exe file (the installation file you downloaded) on your desktop screen.
  2. Open the downloaded QuickBooksToolHub.exe file and do as per the on-screen directives.
  3. Agree to the user’s agreement to finish installing QuickBooks Tool Hub.
  4. Launch QuickBooks Tool Hub.
  5. Choose the Installation Issues option from the left-sidebar.
  6. Click on the QuickBooks Install Diagnostic Tool option and let the tool run.
  7. The tool may consume up to 20 minutes to diagnose the QuickBooks program files. So keep patience until it is over.
  8. Thenceforth, restart your computer.
  9. Now, try to install QuickBooks Desktop and see if you get any errors this time.


We hope you’re able to fix QuickBooks error 1603 after going through the above troubleshooting ways. If not, then the third-party security applications are possibly hindering the installation of the QuickBooks Desktop. Hence, our advice for you is to try to install QuickBooks Desktop in Windows safe mode. You can also ask for additional assistance fixing QuickBooks error code 1603 by getting in contact with our QuickBooks officials at +1-855-856-0042.

Also read this: QuickBooks Abort Error

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