macOS catalina could not be verified
Have a iMac (Retina 5K, 27-inch, Late 2014). Software update downloads Catalina but after it finishes download, I get a new pop up that say "macOS Catalina" could not be verified. An error occurred while installing the selected updates.
This same problem happens every time. Ideas? Thanks!!
iMac with Retina 5K display, macOS 10.14