How to fix a missing serial number on macOSUnable to access certain iCloud services? Missing a serial number? This fix may help!
Over the multitude of years of service, my 2009 Mac Pro has endured many supported and unsupported software updates, OS upgrades, hardware upgrades, firmware upgrades, re-installs, wipes, Boot Camp installs, boot loader changes, and so on and so on. Over that time and over those many changes, at some point, my logic board lost its marbles and simply "forgot" its serial number. Here's how to get your Mac to "remember" its serial number once more!
The problem with not having a serial number
Words of warning
Get your serial number
Get the software
The fix
Final Comments
The problem with not having a serial number
For quite some time I had no issues with my Mac not knowing its serial number or revision (year of manufacture). Everything worked fine. I could install programs, log into the App store, iMessage friends and colleagues, and everything else needed in my Mac environment. However, a time came ...
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How to fix a missing serial number on macOS
