Home Finance What Causes QuickBooks Error 1603 and How to Fix it?

What Causes QuickBooks Error 1603 and How to Fix it?


QuickBooks Desktop always comes at the top of the list when it comes to the greatest bookkeeping and financing applications. Not just it’s super reliable to work with, but also cost-effective. With the help of QuickBooks features and tools, businesses can effectively manage almost all accounting activities. However, just like other computer applications, QuickBooks is also not wholly immune to errors and technical glitches. QuickBooks error 1603 is one such error that many users are facing these days when trying to install QuickBooks Desktop on their computers. The error code appears on the computer screen with an error message, which reads, “The update installer has encountered an internal error.” There can be several reasons causing QuickBooks installations that we aim to explain to you further in this post, along with the best solutions to fix them.

Recommend to Read :- QuickBooks error 6144 82

Looking for instant troubleshooting assistance to get over QuickBooks error 1603 without putting in any effort? If yes, feel free to contact our experienced technical team at the toll-free number (800)-583-0572.

What are the reasons due to which QuickBooks error code 1603 arises?

Generally, QuickBooks error code 1603 gets triggered when there is damage done to the QuickBooks installation file. Though, there can be other reasons also, like as follows:

  • Third-party security application running on the computer interrupting the installation of QuickBooks Desktop.
  • Outdated Windows operating system.

What are the best ways to get over QuickBooks error 1603?

Solution 1) Get QuickBooks Tool Hub and run QuickBooks Install Diagnostic tool from it

  • Visit Intuit’s official website and download QuickBooks Tool Hub of the latest version ( from there.
  • Click on the setup file you downloaded (QuickBooksToolHub.exe) and follow the instructions mentioned on the screen.
  • Finish the QuickBooks Tool Hub installation by accepting the terms and conditions.
  • Double-click the QuickBooks Tool Hub icon to open the application.
  • At the left pane of the window, select the Installation Issues tab.
  • Under Fix My Installation Issues, choose the QuickBooks Install Diagnostic Tool button and let the tool run.
  • Once the tool is done fixing the installation files, you need to reboot the computer.
  • Try to reinstall QuickBooks Desktop.

Solution 2) Install QuickBooks Desktop using Windows Selective Startup mode

  • On the keyboard, press the Windows key to select the Start menu.
  • Into the search box, type “Run” and select Run from the search results.
  • In the Run Window, enter “Msconfig” and press the Enter key on the keyboard.
  • On the System Configuration window, select the General tab.
  • In the General tab, check the Selective startup checkbox, and then select the Load system services option.
  • Select the Disable all button.
  • Clear the Hide all Microsoft services checkbox (located at the bottom left corner).
  • From the list of services, select the Windows Installer checkbox.
  • Click on the OK button.
  • At last, select the Restart button.

Solution 3) Manually check for the latest updates of Windows

  • On the keyboard, press the Windows key to select the Start menu.
  • Into the search bar, type “Settings” and pick Settings from the search results.
  • On the Settings window, select the Update & Security option.
  • From the left pane of the window, choose the Windows Update tab.
  • Click on the Check for updates button to download and install the latest updates of Windows.
  • Reboot the computer.
  • Try to install QuickBooks Desktop again on the computer.


If QuickBooks error 1603 still occurs even after implementing all the troubleshooting solutions mentioned above in the post, then the Microsoft components required for QuickBooks Desktop to run, like MSXML or NET Framework, are corrupted. Our suggestion for you is to manually repair the damaged Microsoft components and see whether you face the error or not while installing QuickBooks Desktop. For additional troubleshooting assistance resolving the installation error, don’t hesitate to speak to our QuickBooks professionals at the toll-free number (800)-583-0572.