Are you running TurboTax in Windows? If so, do you have Norton 360 (Norton Antivirus) on your Windows computer? Norton 360 prevents TurboTax from running after the most recent TurboTax update. If that is your situation, try temporarily disabling Auto-Protect. If that allows TurboTax to run, post back here and I will give you instructions for adding an exception to Norton 360 to allow TurboTax to run.
Here are two ways to temporarily disable Auto-Protect.
1. Right-click the Norton 360 icon in the taskbar. On the pop-up menu click Disable Auto-Protect.
2. Open Norton 360. Click Settings, then Antivirus. Click the toggle for Auto-Protect.
Whichever way you do it, it will offer you choices for how long to disable it. Select 10 minutes. Then see if TurboTax will run.
