Cannot download CA forms for 2024

Are you referring to the California state program itself, or to specific forms? 

The Form 540 California tax return is available in the program, but some individual forms are still being updated. To find out when a specific form is expected to be available, use this tool. Select your TurboTax product, 1040 Individual, and US Federal or appropriate state from the drop-down menus. Enter the form or schedule name in the search box.

The TurboTax forms availability tool provides the company's best estimate of the date the forms will be ready to use in the program. Programmers need to update TurboTax every time the IRS or a state agency updates a form.

If you can't download the state program at all:

Check your Internet connection. If you continue to have trouble, try changing browsers (Chrome usually works well). Reboot your device.

Try clearing your cache and cookies.  If after trying all of the options mentioned you still have the same problem:

See this help article and this one for instructions on how to contact TurboTax customer support depending on which product you are using.