According to MacTracker, your MBPro should be able to handle High Sierra. On the other hand, how much RAM does it have? That could be the problem.


Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365