The License Code started with the 2019 program.
Make sure your computer is the same way when you originally installed it. Like with no flash drives plugged in or plugged in if one was. It asked me to activate again so I just closed the program and took out a flash drive that was plugged in and tried again. It worked. Or you may need to connect a flash drive or printer or something that was connected when you originally installed the program. One person found to disable his virus scanner and firewall first and then it opened.
You need a 14 digit (for 2019) or 16 digit (for 2020) License Code to activate the Desktop program.
Where is the License Code?
https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/01/852973
Or you need to call in and get a new License Code.
