Updat

[Dennis Paul Eldridge]

Hi all, I am attempting to update a 2009 MacBook Pro to High Sierra, but am receiving the old error message saying that the application is damaged. This is usually caused by the system date being incorrect, leading the installer to believe that the certificate is incorrect, so I've read.

In my case, however, the date and time are absolutely correct, so if anyone has any idea what could be causing this to happen I'd really appreciate the help. I was going to try to download it again, but the App Store's page won't allow me to do a redownload.

Thanks!

 

[Apple_Robert]

If the old download is still in your Applications folder, delete it and then you should be able to download again.