Ok folks, I found a solution that works. It's not for the faint of heart, however, but if you have some computer skills, you can do it. I have successfully installed Turbotax Premier 2020 on my Windows 7 Ultimate PC. It may be too late for most, but for those of us in Texas who have until June 15 and still haven't filed, here you go.
I found the solution in the comments of this page:
https://gist.github.com/scorpius/b19023b74754bd8f55da067070d67ed5
see below for comment
I won't elaborate on the instructions below. If you are tech savvy enough you will be able to figure it out, otherwise you are best off getting someone to do it for you. There are at least a couple steps that may confuse the lay person. Good luck. Feel free to reply and if I am able I will help.
Oh and yes, it's complete BS that Intuit has chosen to restrict this edition from working on Windows 7 as it works perfectly. There is no excuse.
Here is the comment:
Not sure if different distributions (web vs CD, different editions) have different installers. The TurboTax 2020/TurboTax 2020 Installer.exe does an additional check for OS version. You don't need to patch the setup.exe first if you have this installer, though you may have to manually install Prerequisites/dotNetFx452_setup.exe if you don't already have a .NET 4.5 or greater installation.
You can patch out the TurboTax 2020 Installer.exe check with the fantastic dnSpy.
- Install and launch dnSpy
- Make a copy of TurboTax 2020 Installer.exe for backup
- Drag original exe into the Assembly Explorer pane of dnSpy (this is the pane on the left)
- Browse to TurboTax 2020 Installer/TurboTax 2020 Installer.exe/Intuit.Tax.Installers.Setup.Common/OSInfo
- Press Ctrl-Shift-E with cursor on IsSupportedOs() or right click method and choose Edit method (C#)
- Change line 11 bool result = false to bool result = true, or just replace whole method body with return true
- Press Compile
- NEXT STEP WILL OVERWRITE YOUR ORIGINAL EXE, MAKE SURE YOU MADE A BACKUP IN STEP 2
- Press Save All (Ctrl-Shift-S) and press OK
- Run TurboTax 2020 Installer.exe
Note: I have Premier, it installed as Basic and asked for a license key to activate.
