I am a product support specialist with Turbo Tax and had the opportunity to work with a customer today and found a solution to the Error 70001.
Start up your device in Safe Mode. Use the link below for instructions.
https://ttlc.intuit.com/community/installing/help/start-windows-in-selective-startup-mode/00/26089
Once you open Turbo Tax Desktop in Safe Mode successfully, follow the steps to exit Safe Mode and Start up in Normal Start-Up. The software should launch as expected.
I hope this resolves the issue for all whose day was interrupted by it.
