My Mac won’t let me install Mac OS Sierra it’s saying can’t install Mac OS because it’s been installed too many times. I don’t have any back up what do I do ?

I think this is another one of Apple's nonsense errors, others got that report on Macs that cannot run Sierra.

1. Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following combinations on your keyboard. Command-R is generally recommended, especially if you never installed macOS Sierra 10.12.4 or later.

Command (⌘)-R Install the latest macOS that was installed on your Mac.

Option-⌘-R Upgrade to the latest macOS compatible with your Mac.

Shift-Option-⌘-R Install the macOS that came with your Mac, or the closest version still available.

Release the keys when you see the Apple logo, a spinning globe, or a prompt for a firmware password. When you see the Utilities window, you've started up from macOS Recovery.

Hi Lavishjamie22,

Thanks for your post! We understand you are unable to install macOS Sierra.

Try reinstalling macOS using Internet Recovery. The steps for this will be to use the Option-Command-R or Shift-Option-Command-R. More information can be found here: How to reinstall macOS from macOS Recovery.

If you're still seeing the same error, reach out for additional assistance here: Get Support.

Take care!