OS X installers prior to February 2016 have stopped working

Today if we could come to mind the phrase ... »This with Steve Jobs did not happen» and it seems that as the years go by there are certain aspects that never occurred in the first versions of OS X that if that are given now. We are talking about the certificates of the OS X installers. When a user downloads from the Mac App Store a certain application including OS X itself in its different versions, that installer is subject to verification on Apple's servers.

This is precisely the problem that users who have OS X installers prior to February 2016 are encountering. They are finding that they cannot install the system. because the same installer gives an error related to the expiration of the certificates on Apple's own servers.

Those of the bitten apple have let the certificates of the applications present in the Mac App Store expire and in this way, if you had downloaded an installer of OS X to your hard drive to use it when you think it is convenient or you have created an installation USB pendrive, you're going to have to do without them and download the latest version of the installer you need again. 

Not long ago it was known that third-party application installers were failing due to the expiration of their certificates and for this the own Apple had to cope by creating new certificates that would allow the installation of these applications without giving any problem. 

The certificate problem reaches such a point that the version of the OS X Lion system cannot be downloaded on the most modern equipment that Apple has put on the market, having to use only the most current system, OS X El Capitan. As we know, this has never happened and it is that Macs have always been able to install versions prior to the current one of OS X. 

Apple is already working to correct these errors by creating new valid certificates. However, if you still don't want to wait for the solution to come out, you can trick the installer by changing the date on the computer through Terminal by typing:

dates 0201010116

So if you were trying to use an installer and it kept giving you errors, you know what the possible solution is until Apple takes action on the matter.