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FIX: TurboTax error 1603 [Full Guide]

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The above issue arises when Microsoft .NET Framework can’t apply an update. It can happen when users launches TurboTax and a dialog box pops up for updating the program. The update routine fails, and users can’t utilize TurboTax as a consequence.

How can I fix TurboTax error 1603?

1. Reinstall TurboTax

IObit Uninstaller turbotax error 1603

Some users have said reinstalling TurboTax resolved error 1603 for them. You can more thoroughly remove TurboTax with IObit Uninstaller.

The IObit Uninstaller utility will erase leftover files and registry entries ensuring that the application is completely removed.

The software also packs in some handy additional features. Its Software Updater tab displays a list of new updates for installed applications.

Users can click the Update All button on that tab to update them. Furthermore, users can remove toolbars and plugins from browsers with IObit Unisntaller.

Other IObit Uninstaller features:

  • The Install Monitor logs software installation system changes for IObit users
  • IObit enables users to remove Windows updates
  • This software includes a black theme
  • It incorporates an all-in-one Software Health feature for system maintenance
IObit Uninstaller

IObit Uninstaller

With IObit Uninstaller, you can completely remove any application from your PC in a matter of moments.

2. Manually update TurboTax

TurboTax turbotax error 1603

Users can manually update TurboTax without launching the software. Applying manual updates has fixed the 1603 issue for some users.

Run a System Scan to discover potential errors

Restoro Scan

Click Start Scan to find Windows issues.

Restoro Fix

Click Repair All to fix issues with Patented Technologies.

Run a PC Scan with Restoro Repair Tool to find errors causing security problems and slowdowns. After the scan is complete, the repair process will replace damaged files with fresh Windows files and components.

Open the Intuit TurboTax update page in a browser. Then you can download the latest R.22.0 update from there to install it.


3. Close background programs before launching TurboTax

  1. Right-click your Windows taskbar and select Task Manager to open that utility.
    access Task Manager from the taskbar
  2. Close all programs listed under Apps on the Processes tab by selecting them and pressing the End task button.
  3. Look through the Background processes section of the tab to see if any other third-party background programs are running. Select third-party background programs you find there and click End task to close them.
    Task Manager window turbotax error 1603
  4. You can also close background software via the Windows system tray on the right side of the taskbar. Right-click the system tray icons for third-party background programs and select their Exit options.
  5. Then run the TurboTax application.

Note: If you have a third-party antivirus utility installed on your PC, make sure you at least disable its shield. To do that, you’ll need to right-click the antivirus utility’s system tray icon and select a disable option for it.


4. Clean boot Windows

  1. Press Windows Key + R shortcut.
  2. Type this command into Run dialog and press Enter: msconfig
  3. If it’s not already selected, click the Selective startup radio button on the General tab.
  4. Uncheck the Load startup items option.
  5. Select Load system services and Use original boot configuration settings if those checkboxes aren’t already selected.
    MSConfig turbotax error 1603
  6. On the Services tab, click the Hide all Microsoft services checkbox to select it.
  7. Next, press the Disable all button.
    The Services tab turbotax error 1603
  8. Click Apply to save the new MSConfig settings.
  9. Press the OK button to close the System Configuration window.
  10. Then click Restart on the prompt that opens.
  11. Thereafter, launch TurboTax to see if the issue persists.

Note: You can restore your original boot configuration by selecting the Load startup items option and clicking the Enable all button within the MSConfig utility.

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This post was written by Matthew Adams and was first posted to WindowsReport



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