@xragman1949 wrote:
Yes. I just installed TT 2020 and when I launched the program it told me it was going to install updates. I got the "failed to install update. Microsoft installer error 1603 Fatal error during installation". I can't open the program w/o it wanting to install updates. I was going to uninstall, but Windows 10 gave me the option to Repair. Tried that, no change. The State seems to have installed properly. I've used TT for over 15 years and this is the first time this has happened.
See this TurboTax support FAQ for a 1603 error - https://ttlc.intuit.com/community/bugs-and-error-messages/help/error-1603-a-fatal-error-occurred-dur...
