Please check the information I have shared on ticket # 17509261 earlier this week
¡Resuelto! Ir a solución.
If you raised a support ticket .. it would take up to a week to hear something back.
What software are you trying to install?
Hello @Anonymous
I was looking into the case and someone of the team already has the case. So they should contact you soon as possible. Referring to the error 1603 you are getting. The main issue that could cause these issue is to the Install Now method.
Have you checked the following article that could help you with the error.

Hello,
Thank you for your response. Yes, this solution has already been provided before, but it is not working in my case.
Hi,
I am getting the same error for Revit and AutoCAD. I could install the Revit 2017 version before, but I need to install the latest version (at least 2020). Same error on earlier as well as latest versions of AutoCAD.
Please help! I need to work on my school projects and having trouble doing so
School PC or your own personal
If you're having issues with ALL of these .. it's like something USER or PC relaxed.
Are you able create a new Windows profile and test it?
its my personal desktop.
I have not tried it with a new windows profile. Do I create the new profile and follow all the steps in the link shared before?
Found this link today and was able to follow the steps to installation, it worked!!
thank you so much Mark Lancaster! you are a star!
Going to try installing AutoCAD now!
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