How To Troubleshoot TurboTax Fatal Error 1603? [Easy Ways]

TurboTax is a well-known taxing software in the US. This powerful application helps in the preparation of income returns. TurboTax is manufactured by Intuit software company. Despite being a global brand, TurboTax may cause many errors, such as TurboTax fatal error 1603 while trying to update the TurboTax. This error is troublesome as it stops the update process suddenly. This blog dictates the solution to error 1603.

What Causes TurboTax Fatal Error 1603?

These are the causes of TurboTax errors:

1. The corrupted windows files and folder permissions.

2. The damaged windows registry key permissions.

3. The TurboTax subscription period has expired.

4. If the downloaded TurboTax is incompatible with your system.

5. A virus or malware intrusion can be a strong reason for the error.

6. A low memory space in the system’s hard disk.

7. The error may appear when you don’t log in as an administrator.

8. Your system may have some manufacturing issues.

9. If the Windows update is interrupted by some other software such as Avast or AVG.

Methods To Troubleshoot TurboTax Fatal Error 1603

There could be several methods to troubleshoot the TurboTax error 1603. Let’s have a glance at them.

Conduct Clean Boot

The error often results from a software conflict between Windows and the TurboTax program. This MSI error 1603 can be fixed by running a clean boot of your system. Hence, conduct a clean boot on your respective windows version and get rid of the error 1603.

Perform The Disk Cleanup On Your Windows

Cleaning up the space in your hard drive is the most useful step in resolving error 1603. Many TurboTax users have claimed that the issue may be created by an overloaded hard drive that needs to be cleared. So, you can run a disk cleanup on your system and eradicate all the unwanted files which are not useful. But don’t forget to take a backup of the necessary files, as you might lose them during the cleanup.

End The Background Programs

The programs running in the background may interfere with the TurboTax software and may fail, leading to the TurboTax fatal error 1603. Hence, to fix the Microsoft installer error 1603 on TurboTax, you must end the programs and processes running in the background. The method might differ on different Windows versions. However, if this method doesn’t help you to fix the error, you can move to the next solution.

Turn Off Antivirus Temporarily

Using an antivirus on your computer may interfere with the TurboTax updating process and cause fatal error 1603 when you are trying to update TurboTax. It usually happens when the antivirus mistakenly spots a file as a virus that may be causing the error. Hence, the best solution to avoid the issue is to turn off the antivirus software on your system.

Update Windows

The Microsoft installer error 1603 might be caused due to an outdated Windows version. And an outdated windows version may lead to several issues with your program, including the TurboTax update MSI error 1603. Therefore, if you see that your windows aren’t updated, you should move to find the update to fix the error 1603.

Install Microsoft Visual C++ Runtime Packages

If your system doesn’t include the Microsoft Visual C++ runtime packages, you may run into problems with various programs like the TurboTax program. Also, users have realized that the lack of a Microsoft Visual C++ runtime package causes errors when you update the program.

Update The TurboTax Manually

This is one of the effective methods in solving the fatal error 1603. You can update it without even opening it on your system. Follow the simple steps mentioned below to do so.

1. Open a web browser and go to the Intuit TurboTax update page.

1. Then, follow the steps to update the TurboTax.

Reinstall TurboTax Program

If nothing works, you should try reinstalling the TurboTax program on your system to fix the problem. Users also say that a reinstall fixed their issue with the update of TurboTax software.

If you want a complete solution to the error, follow the steps mentioned below.

1. First, press the Windows, and I keys at the same time to open the settings on your system and then click on Apps.

1. Find and select the TurboTax app and click on the Uninstall button.

1. Then, click on Uninstall to confirm the process.

2. Next, reboot your PC.

3. Now, press the Windows key, search the Control Panel, and click Open.

1. On the Control Panel, click on System and Security.

1. Then, click Windows Defender Firewall.

1. Now, click Turn Windows Defender Firewall on or off from the left side panel.

1. After that, check the boxes to turn off Windows Defender Firewall for private and public networks.

1. Then, click OK to save changes.

1. Press the Windows and E keys together to launch File Explorer and locate the following location “C:\Program Files (x86) \ TurboTax.”

2. Next, open your Web Browser, log in to your Intuit account, and download the TurboTax software.

3. Then, right-click the TurboTax installer and click on Run as administrator.

4. Lastly, follow the on-screen instructions to install the software and check if the issue has been fixed.

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