Electronic filing of amended federal return

[RJC4]

I prepared an amended return Form 1040-X after receiving a late supplemental Tax Report. I am using the desktop version of TurboTax. I was informed that it is not possible to file the amended return electronically with this version so the entire return with all all forms must be mailed to IRS. However, TurboTax is prompting me to file the return electronically. Is that an error or glitch?

[CatinaT1]

You can efile amended returns.

[RJC4]

Sorry. I attempted to efile the amended return multiple times and received same error message that this return has already been efiled