Is anyone having trouble submitting a State of CT return and getting the message "non-standard tax year"? My tax year is 12/31/2024 but it won't let me submit the return.

You might need to uninstall and reinstall TurboTax. 

See this community conversation: https://ttlc.intuit.com/community/taxes/discussion/re-turbotax-says-ct-forms-will-be-available-1-23-25-so-i-m-wondering-why-i-can-t-file-my-ct-return/01/3479917#M1287270

Just confirm - I can uninstall / reinstall my current version without losing all the other returns that I have processed?

Yes. See the thread I included in the previous post.

THANK YOU for your prompt replies.  This is very helpful.  

I uninstalled / reinstalled the software and I still get the same message.  That it is e-file ineligible due to non calendar year return.    When I print preview the State return - at the top it says "other tax year beginning 01012024 and ending 12312024".  Not sure why this says this - how can I update / change this?

Hmm. Maybe try this:  State install/e-file update loop: State not installed after installation or TurboTax needs to update prior to e-file