I had to reinstall 2019 business and wont load old files to reprint a filed return. sends me to download which I already did and the Error 190

If your file has any state returns in it you need to first download the state program.

After you get the program installed the first thing to do before you open your tax return is to update the program and install any state programs you had. Then open your file. So you first might need to start a fake return to be able to download the state program (go to FILE - NEW TAX RETURN)

Then go to FILE -Open and find your return.

See error 190

https://ttlc.intuit.com/community/bugs-and-error-messages/help/error-190-when-opening-file-in-turbotax-desktop/00/26443

If you are asking about the Turbo Tax Business program (not Home & Business) then you need to reinstall the paid state programs.

Access your downloads here

https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download

How to download the state program in Windows…..

https://ttlc.intuit.com/community/installing/help/download-turbotax-state-windows/00/26016