TT has an artiucle which has 2 possible solutions: https://ttlc.intuit.com/community/taxes/discussion/when-trying-to-update-i-get-the-error-mes[product...
However, neither of them fixed my issue. Although TT has successfully updated at least 3 times since it was installed, it started the 1603 error today. Then I remembered I had the same issue last year, and remembered how I fixed it. Here is what I found.
I typically don't install programs to my C drive. Instead I install them on a spearate drive(partition). That separate drive has full admin rights, so installing TT there should have full rights. I solved it last year and this year both by unistalling TT, and re-installing. But on the rinstall, I did not chagne the install location. Maybe it was simply the inistall and reinstall process that resolved it and not the changing of hte location. But it took only a few minutes to do vs. the time to research and try other things. I guess Ill have to wait until 2023 install to see if it is hte location causing hte issue.
