Posts Tagged ‘0x80070643’

SOLVED: TurboTax 2011 installation fails because of .NET 4 problems

January 29th, 2012 22 comments

My customer was trying to install TurboTax 2011 on his Windows 7 x64 install and got into an endless loop where TurboTax wants to install or “correct” some issue with Microsoft .NET 4. Alas, allowing the software to do this just results in the computer re-booting over and over again, hopelessly trying to do something with .NET 4. If you look under covers, you’ll see you’re getting an error 0x80070643.

Looking at Intuit’s site, it appears that their ultimate fix for this is to recommend abandoning their product and using the online version <shrug>. Here is what I did to fix the problem.

  1. Uninstall Microsoft .NET 4 using the control panel and add/remove programs
  2. For good measure, you might want to disable your antivirus program, I did, but I doubt this was necessary
  3. Download the .NET clean-up tool from the second part of this Microsoft kb article and clean-up .NET 4
  4. Go to C:\Windows\Microsoft.NET and change the name of the folder called “assembly” to “assumbly2” as described in this brilliant solution by irarab.
  5. Reboot
  6. Download the .NET 4.0 installer from here and run it, .NET 4.0 should now install successfully.
  7. Try your TurboTax installation disc now

If this works for you, please leave a comment below. Also contact Intuit and tell them they owe me a commission for fixing their customers’ problem for them.