Nik Software Color Efex Pro 3.0 is a legacy version of the software that is no longer officially sold or supported. While users often search for serial numbers to activate this older version, it is important to note the software's transition through several owners: Nik Software:
Modern Apple Silicon Macs (M1/M2/M3 chips) running newer macOS versions cannot run this legacy 2016 software. Mac users will need to look at modern alternatives. Step 3: Installation Nik Software Color Efex Pro 3.0 Serial Number