I also cannot e-file due to an update.  Michigan forms will not update even though software is saying updates for Michigan forms is available.  I thought my software was having issues with updating, however I just got off the phone with Pro series support and she said I did have the latest update and the Michigan forms update is not yet released and said to wait till the end of the day. 

I too am having the same issues - cannot update Michigan program even after doing the "Repair Update" Tool.  Disappointed again!  Come on, this should have been fixed on 1/29/24 when the Federal was ready to e-file.  Can't tell you how much revenue this is costing me.  Will wait til tomorrow and check again!