This issue has nothing to do with TurboTax.
What happens is that every year, the IRS gets a copy of a giant data file from the SSA, showing all the names and SS numbers of taxpayers. Somehow, the IRS copy of the data file shows that you are deceased, or the IRS is checking the wrong number in the data file.
As you can see, TurboTax has nothing to do with this - it's between the IRS and the SSA.
On occasion, the e-file process fails because of some problem with that file. Your solution is to paper file your return, if the e-file won't work.
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