I filed an extension and i realized i don't need to how do i unfile an extension

[cmtpson]

so someone else can claim me because i didnt work in 2023, they did their taxes and claimed me because i lived in their home for 12 months, their return got rejected because i filed an extension.

[DoninGA]

You cannot unfile the extension.

The other party that claimed you as a dependent will have to print and mail their tax return.  It cannot be filed since the IRS has already accepted an extension with your Social Security number.

[JulieS]

No, you can't withdraw an extension once it's filed. 

Filing an extension won't cause another person's tax return to be rejected. You have to file a tax return and claim yourself before it would cause their return to be rejected. 

Is it possible that isn't the reason their return was rejected, or that another person other than you claimed you as a dependent?