I managed to install it. The problem is definitely the Celik program (MUP Serbia). Even when I uninstalled the Celik program and its certificates, I got the same error. In the end, I created a new Windows profile and installed Fusion on that profile. Here’s the link on how to solve it:
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Problem-installing...
.png){kind=link}