The most common reason for getting error 1603 in QuickBooks is running an outdated Windows operating system. You can follow the instructions below to install the latest Windows updates that will help you resolve the error installing QuickBooks in no time.
Click the Windows Start button and choose Control Panel from the options.
Now click System and Security and Windows Update.
Click the Check for Updates option, and Windows will start looking for any missing updates.
Once the Install Updates button is highlighted, click it and let Windows install the latest updates.
Restart Windows once the updates are installed so that Windows can apply the changes.
Retry to get the QuickBooks installed and see if you have successfully resolved the error.
If you still can’t install QuickBooks because of error code 1603, you must try switching your Windows to safe mode. For expert’s guidance performing advanced troubleshooting to fix QuickBooks error 1603, dial 1-855-856-0042 and get in touch with QuickBooks support team now.