The App Store only shows updates for the OS you are using at the moment, in your case Yosemite 10.10.5.
Apple removes the last macOS version when the new update is released. Because of problems with High Sierra, you can still download Sierra from Apple. You will need to. Thanks for the A2A. You do not need to upgrade to El Capitan before upgrading to Sierra. Here are complete instructions for upgrading to macOS Sierra: 1.
If you want to go to another newer OS that is called an upgrade. This can be done through the App Store using the following link.
High Sierra is the last/ newest OS your Mac can use. Scroll down to Section 4 and click on Get macOS High Sierra.
Make a full back up of your Mac before upgrading.
Check to see with the developers of any third party apps you use that there are updates available so they will continue to work in the new OS. Mainstage for el capitan. Another thing you need to check is if any printers/ scanners etc you use have updated drivers and software so they too can continue to function in the new OS.
I recently updated my MacBook Pro (Early 2011) to Yosemite 10.10.5 and just noticed that Java is missing from System Preferences. It used to be next to Flash Player. Here is the sequence of events: Oct 22, 2015 - #1 Updated to Java 8 update 65 via System Preferences Java Icon. Apr 21, 2018 Type in MAC OS Yosemite or MAC OS 10.10 and hit your enter key. If you cannot find a download for Yosemite, then search for El Capitan 10.11 or High Sierra 10.13 instead. Once you successfully upgrade your Macintosh to a newer operating system, then you will be able to reinstall that operating system upgrade via the Apple Store. Aug 13, 2015 OS X 10.10.5 Yosemite Update Available Now Aug 13, 2015 - 60 Comments Apple has released OS X 10.10.5 Yosemite to Mac users, the update aims to “improve the stability, compatibility, and security of your Mac” and is therefore recommended for all users to install on their hardware running OS X Yosemite. Aug 13, 2015 The OS X Yosemite 10.10.5 update improves the stability, compatibility, and security of your Mac, and is recommended for all users. This update: Improves compatibility with certain email servers when using Mail Fixes an issue in Photos that prevented importing videos from GoPro cameras. Switching from Windows to OS X. Some PC software will not work in OS X, but there may be a Mac version you can buy or download. For example, Microsoft Office 2013 does not run in OS X, but you can buy Microsoft Office for Mac to view and edit your documents. However, not all software has a Mac version, and you may need to do some research to find out if there are Mac versions for your most.

Feb 3, 2019 11:15 PM