I am having the exact same issue with California. Can't start it, even though it's claimed it's downloaded. I had an incredibly frustrating call experience where the only help they had to offer was "uninstall, reinstall", and when the customer support rep reached out to her supervisor, her supervisor told her to have me uninstall, reinstall, and then disconnected and wouldn't allow any other questions.
Intuit seems to be uninterested in helping their desktop customers. After 30 years, I'll be giving up on both Quicken (switched to YNAB) as well as TurboTax. It's sad and frustrating to be out the fees I paid with zero help.
