Info:
Corona Renderer is one of the easiest to learn render engines. Its setup really is as simple as pressing ?Render?! Most new users will learn Corona Renderer in just one day, and fall in love with it over the next few.

Corona Renderer delivers predictable, reliable, and physically plausible results with no compromises in quality. Realistic lighting and materials are yours right out of the box.

1. Download here

2. Copy Corona_Release.dll to the 3dsMax root dir ( C:\Program Files\Autodesk\3ds Max 2020 )
and to the root dir of each other 3dsMax version with the Corona installed, if any
and/or to the Corona Standalone dir ( C:\Program Files\Corona\Standalone ), if needed

Copy CoronaImage.exe and CoronaImageCmd.exe to the Image Editor dir ( C:\Program Files\Corona\Image Editor ), if needed

3. Execute Write_token-3dsmax.bat (Recommended)
OR copy token-3dsmax.txt to the %LOCALAPPDATA%\CoronaRenderer ( C:\Users\%UserName%\AppData\Local\CoronaRenderer ) dir,
that will be created after the first run or create it by yourself

Repeat this step for every User profile that needs Corona

4. Place MaterialLibrary into installion files folder, local library will used instead of downloading from the internet.

5. Enjoy!