On Windows 11 machine, I tried all of the troubleshooting suggestions for FAILED_VALIDATION and nothing worked. I decided to switch back to my Windows 10 machine, and had no problem with eFile.
For a long as people have been reporting these failed validation issues, it seems that TurboTax could have provided better troubleshooting advice and come out with an update. I have been using TurboTax since 2005 and have been a Tax Advantage subscriber for several years now. I may be looking for an alternative next tax season.
