I have educational licenses for Maya 2018 and Maya 2020 and had uninstalled Maya 2018 and installed Maya 2020 a few months ago. Today I hit an issue with Maya 2020 that caused me to have to uninstall it completely, but I've been unable to reinstall it due to error 1603.
However, I was able to reinstall Maya 2018 successfully today.
I did a complete clean uninstall of all maya / autodesk related programs on my PC before attempting to reinstall Maya 2020, I went through various resolutions (turn off firewall, clean uninstall and reinstall, update registry settings for short naming, install licensing hotfix, clear temp folder, ensure folders have adequate permissions).
I believe this may be a licensing issue, as when I reinstalled Maya 2018 it thought I had a trial version and I had to manually provide my key.
Attached are my install and uninstall log files.
Thanks in advance for any help.
¡Resuelto! Ir a solución.
Resuelto por natasha.l. Ir a solución.
Resuelto por natasha.l. Ir a solución.
Hi @Anonymous,
What OS are you running?
Hello @Anonymous,
Sorry to hear you are experiencing issues installing. The latest Autodesk installers have new licensing features. Keep in mind that full control permissions, uninterrupted access to your system & internet access is necessary during this process.
Your log shows "File will have security applied from OpCode." OpCode is a cyber security tool. You will need to temporary disable or uninstall it.
Let us know how it turns out.
Please "Accept Solution" if a reply or replies have helped resolve the issue or answered your question, to help others in the community.

Natasha
Community Product Support Specialist
Helpful Links:
AutoCAD Videos | AutoCAD Crashes or Freezes | AutoCAD Customer Council | AutoCAD System Requirements | Prepare your computer for download | Autodesk Virtual Agent | Clean Uninstall | Steps for Setting-Up Student Software
Hello @Anonymous,
So how did it go? Please let us know if this got resolved & how. ![]()
Also, remember to "Accept Solution" if a reply or replies have helped resolve the issue or answered your question, to help others in the community.

Natasha
Community Product Support Specialist
Helpful Links:
AutoCAD Videos | AutoCAD Crashes or Freezes | AutoCAD Customer Council | AutoCAD System Requirements | Prepare your computer for download | Autodesk Virtual Agent | Clean Uninstall | Steps for Setting-Up Student Software
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