How do I upgrade From OS High Sierra to OS Mojave V10.14

See if you can upgrade to 10.14...

https://support.apple.com/kb/SP777?locale=en_US

https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12

Don't use FireFox for the second link.

Hi Jim.

Naw, not damaged, it's just that you have an old copy already in Applications, there are 2 cures...

Disconnect from the Internet & set the Date back to 2015, then you can run the Install MacsOS Mohave App in Applications, so expired Certificates are not expired.

Or... trash the Install MacsOS Mojave.app in Applications then a new copy can be downloaded.

Hi BDAqua,

I too want to upgrade from 10.13 to 10.14. I have gone to the link you have provided https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12 numerous times, and get the following error message every time:

I have downloaded 10.14.6 dmg, but cannot install that over 10.13. It needs the initial 10.14.

Do you know of a solution?

Thanks

How's it going?

Yes helpful. It provided a list of system requirements. That's the good news. The bad news is that my Mac is too old to upgrade. Guess it's time for a new Mac!

OK, take care & good luck. :)

Thanks BDAqua. This was the problem, the alone upgrade OS 10.14.6 got into my Application folder, even though it wouldn't install over High Sierra. Things went fine after I removed it.

Great to hear, take care my friend. :)