How to Reset the Ignored Software Updates List in Mac OS X
Did you accidentally ignore a Software Update in OS X and now you need to install it on a Mac? Perhaps you were putting off a specific update for one reason or another, and now it’s time to install that ignored or hidden update again onto Mac OS X. Fortunately, getting the ignored updates back is really easy, you can do it either though the Mac App Store, the Command Line of OS X, or for prior versions of system software, the older Software Update app, use whichever method is appropriate for your machine, and whichever you prefer.
Reset the Ignored Software Update List from Mac App Store in Modern OS X Versions
For modern versions of OS X, this is really just a matter of showing the ignored and or hidden updates in the App Store again.
From the Mac App Store application, go to the “Store” menu and choose “Show All Software Updates”, then refresh the “Updates” tab by hitting Command+R to find the list re-populated with whatever software packages you had previously ignored, which can then be installed as usual onto the Mac through the App Store mechanism.
This works in all modern versions of OS X, from Yosemite, Mavericks, Mountain Lion, etc.
Reset the Ignored Software Updates List from the OS X Terminal
Resetting the ignored Software Updates list from the command line is easy too, just launch the Terminal and type the following command:
This will immediately reset the entire ignore list and all of the ignored updates will become visible again, and works for both System Updates and Software Updates.
The Terminal approach to this is ideal for remote management situations, or for accessing in single user mode or safe boot on a Mac, where the typical Software Update mechanisms are not available to use.
Another bonus to the command line method is that it works in ALL versions of OS X, regardless of whether they use the App Store Updates or the Software Updates method of pushing updates to the computer, the command line will do it all.
Resetting Software Updates from the Updates App in Older Versions of OS X
If the version of OS X is antiquated enough to have the Software Update app, like Snow Leopard and prior, you can use that updates application to reset the ignored update list.
From the Software Update app, click on the “Software Updates” menu and navigate down to ‘Reset Ignored Updates’, this reversed the ignore option in Snow Leopard that existed in these older versions of OS X and will show the available software packages again. That’s all there is to it.