@weigand-49 - It's not clear why you are even bothering with doing an Ohio return.
In the personal info section, when it asks if you made money in another state, answer NO, per the reciprocal state instructions, on that page. This will prevent TurboTax from thinking you need to file an OH return.
You say no OH state tax was withheld. If you are a MI resident, that is correct. You do not file an OH state return. You owe nothing and there is nothing to refund.
You cannot get a refund of the Columbus City tax and you are not required to file a Columbus city return. But, Michigan will give you credit for that on the state return, but you have to attach a copy of the city return. So, even though the Ohio city does not require you to file a city return, you have to file one (a Columbus city return, not an OH state return) to get the MI credit, even though there will be no tax due or refunded from the Ohio city.
TurboTax cannot do a Columbus City Return. You can get forms (or even file online) at: https://www.columbus.gov/IncomeTaxDivision/
