The file must be named exactly license.key for the software to recognize it.
Once you've downloaded the license file, it will typically be saved to your computer's "Downloads" folder or the location you specified. The license file may be in a .lic or .xml format. substance painter license file
This guide explains what a license file is, how to install it, and how to troubleshoot common activation issues. What is a Substance Painter License File? The file must be named exactly license