How to Fix TurboTax Error 1603? [6 Ways Explained]

TurboTax error 1603  can occur due to faulty windows installation on your PC. As a result, the  TurboTax application  gets disturbed and prevents your PC from running. However, error codes are normal but annoying at the same time. If the error interrupts your work, read the blog till the end to discover the best solution for you.

This blog will give you 6 straightforward solutions to fix the error. Take a look at them and see if it works out for you. But wait, before going to the solution, you must know what’s causing them. Every error has a specific cause to occur. Hence, once you recognize it, it becomes easy to solve that.

What Causes TurboTax Error 1603?

Here are some possible causes that might have caused the issue:

  • Maybe your TurboTax subscription is not valid. Hence, confirm the validity of your TurboTax subscription.
  • Maybe your windows operating system is infected, which is causing the issue.
  • Your System is corrupted with a virus or malware.
  • The error may occur due to an incompatible application on your System.
  • Maybe you’re not accessing TurboTax as an administrator.
  • The application may have manufacturing issues.
  • The System’s hard disk doesn’t have enough space.

Ways To Fix TurboTax Error 1603

Although these ways are manual and effortful, they are still important to fix the issue. You need to follow the same as mentioned to fix the issue quickly.

Solution 1: Eliminate All Problematic Applications

Unwanted applications are the common problem that causes the error. So, in order to fix the issue, you need to remove them all.

Learn how to do this:

  • Run “Task Manager” on your System. It will display a full list of your System’s running programs. To open it, press Ctrl, Del kay, and Alt key simultaneously.
  • Then, you must go to each process tab and end the process separately. To end the process, click on each process and then choose to delete or end it.
  • Hence, eliminating certain processes may give you an idea of which process has caused the issue. If this method doesn’t work, move ahead to the other option.

Solution 2: Update Your Antivirus Program

Check if your antivirus program and operating system are updated or not. If not, you will encounter error codes such as 1603. Therefore, keep your antivirus and operating System updated. Thereafter you have to take a scan of the System to identify any malware or virus that corrupted your System.

Solution 3: Perform Disk Clean For Your PC

Cleaning up the hard disk of your PC can also fix the issue. The clean-up terminates all the temporary or unnecessary files from the System and removes all the problematic files.

Here’s how you can do it:

  • The first and Foremost step is to take a backup of all your important files.
  • Then, check the space on the hard drive.
  • Now you need to remove all cache files from your System.
  • Then, restart your System.
  • Thereafter, launch the file explorer on the System.
  • Now right-click on the main directory and tap on “Properties.”
  • Under the properties option, click on the disk clean-up option.

Solution 4: Reinstall TurboTax

TurboTax error 1603  occurs from technical glitches in the application. Therefore, you first need to reinstall the TurboTax on your System and uninstall the existing applications from the System. Then you will again install the applications.

Let’s know how to do it:

  • Disable the System’s security software temporarily so it doesn’t interfere with the reinstallation process.
  • Then, remove the TurboTax from the System.
  • Thereafter you’ll have to reinstall the TurboTax. Ensure to reinstall it correctly and don’t skip any important steps.
  • And then, open the setup file on your System and tap on the file.
  • Now you need to select an option for troubleshooting compatibility and wait till the program is removed from your System.
  • Once you complete these steps, select the option for “worked in a previous version on Windows.”
  • Press the “Next” button and click the “Start” option.
  • Then, the installation process will start on the System. When it’s installed, click the finish button.

Solution 5: Reinstall Runtime Libraries

The error may occur if you have not updated the runtime libraries, such as or C++, on your System. In order to install them, you have to uninstall the existing version of the libraries on your System.

Follow the steps to do it:

  • Open the run box by pressing the desktop’s windows and R keys together.
  • In the dialogue box, type in “appwiz.cpl”.
  • Now in the programs and features box, type “Microsoft Visual.”
  • Then select your Microsoft Visual C++ package from there.
  • After that, click on uninstall to remove the package.
  • Restart your System.
  • Then, download the updated versions of the Microsoft Visual C++ package you uninstalled in the previous step.
  • At last, install the downloaded visual C++ packages.

Solution 6: Clean boot windows

Here are the steps to clean boot windows:

  • Launch the Run dialogue by pressing the windows and R keys simultaneously.
  • In the dialogue box, type in “msconfig.”
  • Now click the Selective startup radio button on the general tab.
  • Then, uncheck the load startup items option.
  • Thereafter, select “Load system services” and “use original boot configuration” options if they aren’t already checked.
  • Then, move to the services tab and click the “Hide all Microsoft services” checkbox to select it.
  • Now press the “Disable all” button.
  • After that, click “Apply” to save new Microsoft config settings.
  • Then, press the “OK” button to exit from the configuration window.
  • Next, click “Restart” on the displayed prompt.
  • At last, launch TurboTax to check if the issue is resolved or not.


We explained 6 ways to fix  TurboTax error 1603 . All the described remedies are easy and require no extraordinary technical skills. Everybody can do this by following the instructions. So, fix your TurboTax issue by discovering the main cause.

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