The above problem occurs when the Microsoft .NET Framework fails to apply an update. This can happen when users start TurboTax and a dialog box appears to update the program. The update process fails, so users cannot use TurboTax.

How do I correct a TurboTax 1603 error?

1. TurboTax reinstallation

Some users have reported that TurboTax reinstall error 1603 has resolved for them. You can remove TurboTax more thoroughly with IObit Uninstaller.

IObit Uninstaller removes the remaining files and registry entries and provides a complete removal of the application.

The software also includes some useful extras. The Software Updater tab displays a list of new updates for installed applications.

Users can click the Refresh All button on this tab to refresh them. Users can also remove toolbars and plug-ins from browsers with IObit Unisntaller.

Other features of IObit Uninstaller :

  • Install Monitor records changes to the software installation system for IObit users.
  • IObit allows users to uninstall Windows updates
  • This software contains a black theme
  • It includes an all-in-one health software function for system maintenance.

IObit Uninstaller

With IObit Uninstaller, you can completely remove any application from your PC in seconds.

2. TurboTax Update Manual

Users can update TurboTax manually without running the program. Applying the manual updates solved the 1603 problem for some users.

Run a system check for errors

Press Start Scan to find problems with Windows.

Press Repair Everything to fix problems with proprietary technologies.

Run a PC scan with Restoro Repair Tool to find errors that cause security problems and slowdowns. Once the scan is complete, the repair process replaces the damaged files with new files and Windows components.

Open the Intuit TurboTax update page in your browser. You can then download the latest R.22.0 update and install it from there.

3. Close background programs before starting TurboTax

  1. Right-click on the Windows taskbar and select Task Manager to open this utility.
  2. Close all programs listed under Apps in the Processes tab by selecting them and clicking the End Task button.
  3. Look in the Background Processes section of the tab to see if any other third-party background programs are active. Select the third-party background programs that are there and click Finish to close them.
  4. You can also close the background software from the Windows system tray, located on the right side of the taskbar. Right-click on the third-party background program icons in the taskbar and select their termination options.
  5. Then launch the TurboTax application.

Message: If you have a third-party antivirus program installed on your computer, make sure you at least disable its protection. To do this, right-click on the system tray icon of the antivirus program and select the Disable option.

4. Clean up Windows Startup

  1. Press the key combination Windows + R.
  2. Type this command in the Run dialog box and press Enter: msconfig
  3. On the General tab, click the Start Selective radio button if it is not already selected.
  4. Clear the Load startup items check box.
  5. Select Load System Services and Use Initial Boot Configuration Settings if these boxes are not already checked.
  6. On the Services tab, select the Hide all Microsoft services option.
  7. Then click the Disconnect All button.
  8. Click on Apply to save the new MSConfig settings.
  9. Click OK to close the System Configuration window.
  10. Then click Restart in the window that opens.
  11. Then run TurboTax to see if the problem persists.

Message: You can restore the original startup configuration by selecting the Load Startup Items option and clicking the Enable All button in the MSConfig utility.

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