Solved
For Denver
TurboTax does not support city/municipal tax returns for the state of Colorado.
See this TurboTax support FAQ for city returns supported - https://ttlc.intuit.com/questions/1899325-which-city-tax-returns-can-i-do-in-the-turbotax-state-prog...
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.