Common procedures used by ChemIT to update computer running current Mac OSX

Operating System Updates

Check for OS updates through the App Store
- This will also have updates for software such as ITunes and Safari

Software Updates

Firefox browser (under "About Firefox") --> Updates automatically without prompts
- To switch to ESR version:
  - http://www.mozilla.org/en-US/firefox/organizations/all/
- Browser plug ins (Silverlight, flash, etc.)
  - http://www.mozilla.org/en-US/plugincheck/
Microsoft Office
Adobe Flash Player
MS Silverlight. If still not signed, you might have to run it from the System Preferences => Security and Privacy => "Click the lock to make changes." => Allow apps downloaded from: Anywhere.
- No need to revert to: Allow apps downloaded from: Mac App Store and identified developers. Just keep it as "Anywhere". (June 6, 2015.)
And possibly other software
- Adobe Acrobat, full version. (N.B. Almost no reason to have the read-only Acrobat installed (much less updated) since Mac OS comes with competent PDF reader, Preview.)
- If Java installed, use Java Control Panel, available through the Java control panel in System Preferences (opens in a separate window).