Same issue for Iowa

Same with MA

Same here as well. I’m trying to efile my Illinois and Indiana state returns. 

It does not allow to file Montana either.

It's affecting a lot of people in a lot of different states.  The FAQ where one can sign up for notifications has had almost 3,000 views in 3 days.  There is no new info in the FAQ, but, hopefully, there will be more info about a possible "cure" soon.   TurboTax updates typically occur on Thursdays.  Whether that's the case for this issue, I don't know.  Hopefully, the FAQ will say at some point when to expect it.

FAQ: Why am I not able to e-file my state return after filing my Federal return?

https://ttlc.intuit.com/community/tax-topics/help/why-am-i-not-able-to-e-file-my-state-return-after-...

Same problem with my California Return, I'm stuck not being able to e-file because there is no option to when I go back to select the Federal Return.

@JohnH1 Please review the FAQ provided by mesquitebean in the thread above; this way you can sign up for email notifications (if you have not already done so).

Same for Arizona.

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@Randy111 wrote:

Same for Arizona.

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FAQ: Why am I not able to e-file my state return after filing my Federal return?

https://ttlc.intuit.com/community/tax-topics/help/why-am-i-not-able-to-e-file-my-state-return-after-...

Lets hope it works. 🐵

same for virginia

I still cannot E-file my State of Illinois taxes.  It hasn't been fixed.  Help!

Please follow the instructions in this TurboTax FAQ to contact customer support for assistance:  What is the TurboTax phone number?

@eburs1981