1. Trying to FINALLY update because I'm currently running Mac OS X Version 10.7.5 But keep getting this message: Software Update doesn’t have any new software for your computer at this time. Obviously I know there ARE updates available.so I'm stuck.
2. Microsoft does, of course, have an Office product for Macs, but it's far from a priority for the firm. Even with a new 2011 version on the way, many Mac users choose not to shell out for a full.

If any updates are available, click the Update Now button to install them. Or click 'More info' to see details about each update and select specific updates to install. When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date. Can’t install the software for the HP Officejet Pro 8550 printer because it is currently not available from the Software Update server. After doing some research online, it seemed I had to perform a Software Update since the driver for my HP printer was supported by Apple. Licensed for one PC or Mac.Windows Information Protection requires either Mobile Device Management or System Center Configuration Manager to manage settings. These products are sold separately. Active Directory makes management easier but is not required. Requires TPM 1.2 or greater for TPM based key protection.

Some Mac users have reported technical issues once they update their OS to the High Sierra Update. To be precise, their App Store feature is not working as it should or at least, as it did before the update. Usually when an app releases its update, it is directly indicated in the App Store, but in this case, you get the update and when you proceed to download it, you get a pop-up showing “No Update Available”. Sometimes, the main culprit could be a ghost update.

Mac OS 10.13 High Sierra Update Features

Apple has wowed its loyal subject, once again, by introducing a new OS update. Beyond the newly enforced automatic security checks on EFI firmware being done each week, this new OS update, the macOS 10.13 High Sierra, comes with cool new features. They include:

Improvements to the Safari Browser – Imagine a browser that stops ad-tracking and auto-playing video media and a broader Spotlight Search in the Mail App. Moreover, when composing emails, the Mail App allows split viewing of the screen and uses over 30% less disk space.

The Photos app has not been left behind in the macOS 10.13 High Sierra update. It has been imbued upon, better sorting tool to boot, accompanied by a new themes courtesy neural networks, and improved Apple devices syncing. Editing in the photos App have been improved as well, the user now has an easier time enhancing the quality of their photos and applying filters without being adept in Photoshop.

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One of the major changes is the file system, Mac has ditched the 30-year old HFS, for the new and improved Apple File System (APFS). APFS supports native encryption and fast metadata operations. It is also a 64-bit file system, that makes your Mac run faster, be more secure and transparent. Apple has also announced that they will discontinue most of Mac’s 32-bit apps in the later macOS High Sierra versions.

The High Sierra update also brings HEVC (H.265) video compression to the Mac, enabling video files compression that streams at higher resolutions. Furthermore, with any Mac that can run the new OS and with a dedicated graphics card installed through Thunderbolt 3, you have the opportunity to immerse yourself in Virtual Reality.

What to Do when High Sierra Update Notification is not Showing on Mac App Store?

Your update may not be showing possibly due to old cache files mishandled during the upgrade and this is an easy problem to fix.

1Shut Down and Restart Your MacBook

This is often the first action to any issues with an Apple device. Before attempting any troubleshooting protocols or tech mysticism, it is recommended that you shut down the system first. Wait a few minutes and reboot the system. It is possible that the increased load to the processor immediately after the update may trigger its misbehavior. Once you restart your machine, the App Store will start recognizing the apps that need updating and those that are up to date.

Remember, do not restart the system, shut it down and give your processor and OS a fresh start.

2Change App Store Settings

If restarting your Mac doesn’t work, your next recourse should be the App Store Settings. You’ll have to change some of them and try to solve the issue.
The first stage is to launch “System Preference” and from there, open “App Store”. On the “automatically check for updates” option, toggle it on as well as all the options therein.

Your system will then begin searching actively for any app updated including the system updates and they will also be downloaded and installed automatically, as soon as you turn all these options on.

You can also check the “app is updated automatically”, and close the App Store app and re-launch it after a few seconds. It will display the message: “Mac app store says no updates available”.

Click on Check Now after a few minutes and do either of the following to see if this fix has worked or not.

1. Check internet connection.
2. Check App Store Purchases.

If you have unwillingly logged out from the App Store with your apple id, no new updates will be installed on your Mac. However, you can still log in to your system with your login credentials and proceed normally with the updates.

3Check Update with Terminal – Force Update

Using Terminal should be the last resort and shouldn’t be attempted carelessly. Always use precaution when working with Terminal. Ensure you have administrator privileges, i.e., admin passwords to effectively execute commands. To check update with the terminal is also considered a force update and should be done in the following way:

From the terminal, execute the following command “sudo softwareupdate –ia”. A message “Finding Available Software”, will be displayed once you execute the command. All the updates should appear on the screen and to install them, type the following command “Sudo softwareupdate – -install – -all”.

If your system is still unresponsive, one last course of action should be typing the command “defaults read com.apple.appstore” and execute it. This command should unmask the issue behind update not showing in App Store.

4Clean Cache of App Store with Finder

Now for this fix, we’ll employ the use of ‘Finder’. Launch Finder and simultaneously press command + shift + G keys.

Alternatively, you can open “Go Menu” and select “Go to Folder”. Then type the following command '~/Library/Caches/'. Go to the filename “com.apple.appstore” and delete it from the folder.

Go back to the top and open 'Go Menu' > 'Go to Folder' but this time, type /private/var/folders and locate “com.apple.appstore” in all the folders and subfolders, then delete it.

Restart your Mac, and hopefully, the issue will be resolved.

Summary

The MacOS High Sierra is an update for the Apple Macintosh, and it boasts incredible new features as well as boosting the overall processor speed of your machine. The update itself is not lacking in issues that the Mac community have experienced and created forums on. In this article, there are four ways to troubleshoot “Update not showing on App Store” highlighted for you to exploit. The terminal fix is to be left for advanced users and shouldn’t be trifled with.

Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

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Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

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If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

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macOS	Latest version
macOS Catalina	10.15.7
macOS Mojave	10.14.6
macOS High Sierra	10.13.6
macOS Sierra	10.12.6
OS X El Capitan	10.11.6
OS X Yosemite	10.10.5
OS X Mavericks	10.9.5
OS X Mountain Lion	10.8.5
OS X Lion	10.7.5
Mac OS X Snow Leopard	10.6.8
Mac OS X Leopard	10.5.8
Mac OS X Tiger	10.4.11
Mac OS X Panther	10.3.9
Mac OS X Jaguar	10.2.8
Mac OS X Puma	10.1.5
Mac OS X Cheetah	10.0.4