Even with App Store Automatic Updates set to OFF, all of the iWork apps pop up a modal dialog box on startup to inform you there is an update. Is there a way to disable this behavior (in El Capitan)?
Yes, you can disable this. It is very easy, although completely unsupported and undocumented by Apple.
- Install the PrefsEditor application. (You can also do the following steps with Xcode… but ew.)
- Open PrefsEditor and select the
- Find the
TSAAUNPersistedStatedictionary and click its disclosure triangle.
- Edit the
nextAlertPresentationDatefield to some date far in the future (for example, change
- Save with
- Repeat for
- Profit! (No more obnoxious popup dialogs.)
These instructions are summarized from a wonderful post on MacRumors.