Hi Adzim,
after reinstallation of the components in your suggested order, I am still not able to compile the DDR3 IP.
I also tried to uninstall everything (including Quartus) and install it in the order of WSL, Ubuntu, Quartus but still without success.
After that I did the same on another pc. On this computer the IP compilation was successful.
I really don't know whats the big difference between my working pc and the one, where compilation was successful. (Windows-Versions are almost the same)
Maybe I have to completely reinstall Windows to be successful on my working pc.
Best Regards,
Christian