TurboTax Support

Troubleshooting Problems with the Microsoft .NET Framework

The Microsoft .NET Framework helps software developers create applications quickly, efficiently, and with less "code clutter". More info

TurboTax for Windows 2009 and later relies heavily on the .NET Framework, so it's crucial that the .NET Framework files on your computer are up-to-date and functional.

.NET Framework Errors

  • If you're getting 0x80070643 or 0x643 errors when manually installing the .NET Framework, click here and follow the instructions in the Microsoft knowledgebase article.
  • For any other errors, click here to visit Microsoft employee and .NET expert Aaron Stebner's WebLog and carefully follow his directions to download and run the .NET Framework Cleanup tool.

Troubleshooting .NET in Windows XP, Vista, or 7

If you're having problems but not getting an error code, start by finding out which version(s) of .NET Framework is installed on your computer:

  1. Open Control Panel in your Start menu.
  2. Click Uninstall a Program (or Add or Remove Programs in Windows XP).
  3. Wait for the list to finish loading.
  4. Find the version number(s) for Microsoft .NET Framework, close the window, and proceed to the appropriate set of instructions below.

If Version 4 is NOT installed, click here and follow the instructions in the Microsoft knowledgebase article.

If Version 4 or greater is installed:

  1. Download the .NET Verification tool from Microsoft employee and .NET expert Aaron Stebner's WebLog and run it, making sure to scan every version of the .NET Framework on your computer (usually, you'll see at least 3 in the drop-down menu).
  2. Make a note of which version failed. Failed versions of .NET Framework will need to be repaired or reinstalled.
  3. After repairing or reinstalling, run the .NET Verification tool again.
  4. After the verification completes, the Current Status line should read Product verification succeeded.

If the .NET Verification tool continues to detect problems, or if you are still having .NET Framework issues after passing verification, download and run the official Microsoft .NET Repair Tool. Should that fail as well, click here to visit Microsoft employee and .NET expert Aaron Stebner's WebLog and carefully follow his directions to download and run the .NET Framework Cleanup tool.

Troubleshooting .NET in Windows 8

.NET 4.5 is installed by default on Microsoft Windows 8 and contains all the functionality of .NET 4.0.

If you are having .NET issues, download the .NET Verification tool from Microsoft employee and .NET expert Aaron Stebner's WebLog and run it in order to scan .NET 4.5. If it fails, please try using the System File Checker tool.

If Problems Persist

If you tried all the solutions in this article without success, consider using TurboTax Online. Because our Online version isn't installed on your system, it doesn't rely on a fully-functioning .NET Framework. How TurboTax Online compares to TurboTax software.

If you decide to switch to TurboTax Online, click here to request a voucher, or click here to request a refund for your CD/Download TurboTax software product.

Did This Article Answer Your Question?
Did this article answer your question?
Your Feedback
Cancel Submit
Contact Us