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'This copy of the Install OS X Mavericks application can't be verified. It may have been corrupted or tampered with during downloading'
The reason why this insane message is happening is because as of February 2016, the security certificates that validate these Mac OS X installs seems to have expired. What this means is that when you try to install Mac OS X Mavericks, Yosemite or El Capitan from any USB or external source, the certificate checking process will render your copy of the installer null and void. You will then get the error 'This copy of the Install OS X Mavericks application can't be verified. It may have been corrupted or tampered with during downloading.'
Thankfully, as annoying as this is, there's a pretty easy fix in the Terminal, located on every installer of Mac OS X. Here's what to do:
- Boot into the OS X installer as you would normally do (hold down option at boot and choose your installer
- Disconnect the ethernet cable if it's connected and turn off wi-fi from the networking menu
- Open the utilities menu item and choose 'Terminal'
- When the Terminal appears, simply type in the following command: date 0202020216
- Hit return and you will now see the new date as read back by the system
- Quit the Terminal
- You can now begin to reinstall OS X from the main screen as you did before
Why does this work in the Mac OS X Terminal?
Juststream roku. As explained here, OS X 10.11 'El Capitan' fails to install because it is too old (the technical reason being that the signing certificate is no longer valid). But you can trick the OS X installer into thinking that it is 2017 and it will happily run without any errors.
The reason why this works is that you are actually turning your computer into a time machine–and you are telling it to go back to the date February 2nd, 2016. This tricks the certificate into believing that the date is now in the past and allows the installation to resume. You can also redownload any installers to get the new certificates, which are located in your purchase history on the Mac App Store. You would then have to make new installer disks with these new downloaded installers.
- 10 thoughts on ' How to overcome OS X 10.11 El Capitan not installing ' hydrovacing October 2, 2015 at 7:30 am. Anyone know know another way to download EL Captain. I have had on of my Mac's trying to download it since it came out. It is now at this moment at 4.81 GB.
- Hindi Me100% kam karega. 'This copy of the OS X EL Capitan application can't be verified it may have been corrupted'. 'This copy of the OS X Yosemite applic.
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Many Hackintosh users running Mac OS X Lion have been unable to login to the Mac App Store, instead receiving the error, 'Your device or computer could not be verified. Contact support for assistance.' The verification issue appears to have affected the several legitimate Macs as well, though on less wide of a scale. There is no single, definite solution to this issue, but several possible workarounds are available. Read past the break to find out how to fix the error.
1. Go to /Extra in your main hard drive and open the text file org.Chameleon.boot.plist with TextEdit. This is the configuration file for the Chimera bootloader (which UserDSDT uses). Add this string to the part of the file between and :
EthernetBuiltIn
Yes
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Then reboot. If this doesn't solve the errors, proceed to the next solution.
2. Open org.Chameleon.boot.plist again. Add the following string:
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PCIRootUID
1
If this string is currently set to 0, change it to 1. Reboot.
3. If neither of the above solutions fix the issue, open the System Preferences app and go to the Network section. On the left-hand column in the Network section, select each of the items and remove it by clicking the minus sign on the bottom of the column.
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Then, go to /Library/Preferences/SystemConfiguration in your main hard drive and delete NetworkInterfaces.plist. Or alternatively, drag it to the desktop (as a backup, in case things go wrong).
By removing all of the Network items in System Preferences and deleting NetworkInterfaces.plist, you have effectively reset the network configuration for Mac OS X. Reboot (you may have to reconfigure your internet connection afterwards).
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