This runtime error can give the users a tough time if not resolved on time. Error code 1603 can be solved by using any of the given troubleshooting tips:
• First, close all the conflicting software. • You need to keep your Internet Explorer updated at all times. • Run the Disk Cleanup to clean all the junk files of your system. • Make sure that the antivirus software installed on your system is updated with the latest version or not. • Reinstall the runtime libraries and graphic drivers.
If the steps, as mentioned above, does not help you in fixing the error, then you can call TurboTax Tech Support to speak with the certified experts who can resolve the fault quickly.