Release Date

Below is the release date for your favorite Intel-based Operating System from Apple and due to expired certificates on the installers, you will need to set the date to match (or within a year) using the Date and Time Preferences in macOS, the Terminal or from the BIOS and then install normally. Be sure to have a smartphone or tablet handy since adjusting the date will cause websites with SSL certificates to not at all until the date is made current. Please note that if you are installing with the use of virtualization software, you need to disable the option to sync the time. Failure to disable the sync will cause the time to sync from the host. If you are unable to find the settings, your last option is to change the time on the host which will limits our internet access.


Stephan Pringle

About The Author: Stephan Pringle writes about hardware and software for several online publications. To see more material from Stephan, you can follow his personal tech blog at and tech vlog at