What version of MacOS X can we install?

Tom Skowyrski
Tom Skowyrski used Ask the Experts™
on
Hello,
We have an iMac, 24 inches, from 2007. There is a Mac OS Lion installed on this computer. We want to install a newer version of the operating system and we tried 'Sierra' already but we didn't succeed. Regarding that, we would like to ask you which latest version can we install on this iMac?
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Mechanical Engineer
Most Valuable Expert 2013
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Commented:
El Capitan is the most recent supported version for a 24” 2007 iMac.
https://eshop.macsales.com/guides/Mac_OS_X_Compatibility

Get it here: https://support.apple.com/en-us/HT206886
It's time to get rid of that Mac and get a newer system. You won't be able to install secure browsers and up to date software.  If you keep it, you need to keep it off the internet to protect it from getting hacked.

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Commented:
Hi byundt,

Thanks for the answer and the link.
Regards,
Tom

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