Cannot Install Os X El Capitan

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Cannot Install OS El Capitan on my 2012 Macbook pro. Does anybody know if I can just reinstall my OS X el capitan and if it will fix the corrupted files/software. Now, I've have been trying for a week and a half to get either 10.10 or 10.11 to install and I receive the same message from both: 'This copy of the Install OS X Yosemite (or El Capitan) application can't be verified. It may have been corrupted or tampered with during downloading. OS X El Capitan supports two methods of installation. The default method is an upgrade install, which will upgrade your Mac to El Capitan while preserving all of your user data and apps.This is the most common means of upgrading the operating system and is recommended when your Mac is in good shape and having no problems. How do i install Office 365 on Mac OS El Capitan 10.11.6. You can follow the question or vote as helpful, but you cannot reply to this thread.

Install

Installing El Capiton on an old Mac Book Pro today, I received the error:

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.

I checked Apple’s support Matrix (it is a very old macbook pro) at https://support.apple.com/kb/SP728?locale=en_GB and it was listed as supported.

After lots of Googling and investigation, I discovered that the date and time were not set to current, the macbook thought it was year 2000.

Capitan

You can easily reset the time and date by following the steps below:

Mac
  • Click Utilities on the menu bar
  • Select Terminal
  • Type date
  • Confirm the date is wrong
  • Type date 062112422016 (example: June 21st 12:42 2016)
  • Exit terminal
  • Click Restart

Cannot Install Os X El Capitan Using

Once the Date and time are configured you will be able to install OS X.

Install Os X El Capitan Cannot Be Verified

Easy fix, for a ridiculous error!