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os x could not be installed on your computer

os x could not be installed on your computer


no packages were eligible for install. Contact the software manufacturer for assistance. Quit the installer

to restart your computer and try again.

MacBook Air

Posted on Oct 13, 2021 5:48 PM

Reply
Question marked as Top-ranking reply

Posted on Oct 13, 2021 9:08 PM

The certificates for several of Apples OS's expired in October 2019, Apple haven’t bothered getting these updated on 


their Recovery Servers with valid certificates. 




This may be the problem you are experiencing. 




Try this workaround, we are going to set the time and date on your mac to a date previous to the expiry date of the certificates.




Connect your mac to your router via cable, not WiFi




Boot to your Recovery HD, click on Utilities in the menubar select Terminal.




Make sure WiFi is switched off, it can reset the date back to today.




Enter a new date, for example or just copy and paste




sudo date -u 011421002017




press Return


enter your password


press Return




If Terminal returns an error saying sudo : command not found, then try again without sudo.


just enter 




date -u 011421002017




press Return




You won't be prompted for a Password if you did not need to use sudo




Once the date has changed you can quit Terminal.




Now try downloading the OS.


Click on Install OS X, press Continue.




If this works then when the OS is installed and booted up you can Open System Preferences> Date & Time


and reset the time back to today.

2 replies
Question marked as Top-ranking reply

Oct 13, 2021 9:08 PM in response to enriquefromunion

The certificates for several of Apples OS's expired in October 2019, Apple haven’t bothered getting these updated on 


their Recovery Servers with valid certificates. 




This may be the problem you are experiencing. 




Try this workaround, we are going to set the time and date on your mac to a date previous to the expiry date of the certificates.




Connect your mac to your router via cable, not WiFi




Boot to your Recovery HD, click on Utilities in the menubar select Terminal.




Make sure WiFi is switched off, it can reset the date back to today.




Enter a new date, for example or just copy and paste




sudo date -u 011421002017




press Return


enter your password


press Return




If Terminal returns an error saying sudo : command not found, then try again without sudo.


just enter 




date -u 011421002017




press Return




You won't be prompted for a Password if you did not need to use sudo




Once the date has changed you can quit Terminal.




Now try downloading the OS.


Click on Install OS X, press Continue.




If this works then when the OS is installed and booted up you can Open System Preferences> Date & Time


and reset the time back to today.

os x could not be installed on your computer

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