• Why Won't My Mac Update
• Why Won T My App Open On Mac Computer
• Why Won't My App Open On Mac
• Why Wont My App Store Open On Mac

All went well and happy about the speed of the new OS, until last days my Mail app won’t open. Same for iCal and Address Book. Few minutes later found out that App Store also not opening. I’ve restored my old OS and wait for a new release of 10.11or even a newer one. Unless your app comes direct from the App Store, or the app’s developer got the app notarized by Apple, it won’t launch. Double click on it, and you’ll see a warning — and nothing else.

Have you experienced problems on your Mac when you are updating apps but it won’t download the updates or the Mac app store won’t download anything, at all?

• Suddenly Microsoft word will not open on my Macbook Pro. All over Microsoft apps will open without problems, but when I click to open word it just bounces as if its trying to open for a few minutes then stops bouncing. If I right click it says 'Application not responding' and will only allow me to force quit. I have updated my Mac, my Microsoft.
• For the past few weeks my Mac App Store hasn't been loading correctly. Occasionally it does, but i'd say this has only been once or twice in the last month. Here's a link of what it looks like.
• The instructions provided by Apple are as follows: Be sure your Mac is shut down. Press the power button. Immediately after you hear the startup tone, hold the Shiftkey.

You are not alone because it is one of the most common problems encountered by Mac users whether it’s downloading or installing updates, apps, or files. There are also cases when the notification says the app or file has been downloaded but you just can’t find where it is, or when the installation process just quits all of a sudden even when you have a strong internet connection.

How To Fix The Download Problem

The easiest solution would be to empty your App Store’s temporary download cache folder. This solution works most of the time and it is easy to do. But before you start fixing your Mac download problems, run a scan of your computer first to make sure there are no corrupt files or cache affecting your App Store. You can use Outbyte MacRepair to scan and clean up your computer for all types of junk.

Once you’ve run the scan and deleted all unwanted files, don’t forget to backup your important files before you start fixing your App Store. This seems like a very simple problem with a very easy solution, but you’ll never know what could happen so always backup your files just to be safe.

After these preparations, log out of the App Store and then log back in. Then, follow these steps to solve your App Store download problems:

1. Go to Spotlight and type in Terminal.
2. Type in the following command: defaults write com.apple.appstore ShowDebugMenu -boot true ; killall AppStore ; exit.
3. Open App Store and sign out of it by going to Store > Sign Out.
4. Then go to Debug Menu.
5. Select Clear Cookies and Reset Application.
6. Next, type the following commands in the Terminal one at a time. These commands will reset the plists:
   • rm ~/Library/Preferences/com.apple.appstore.plist
   • rm ~/Library/Preferences/com.apple.storeagent.plist
   • rm ~/Library/Cookies/com.apple.appstore.plist
7. Then type in: open $TMPDIR../C/com.apple.appstore/. This opens your Mac App Store’s temporary download cache folder.
8. Delete these files:
   • apple.appstore.plist
   • apple.installer.plist
9. Or you can type in the following commands to delete these cached files:
   • rm -r ~/Library/Caches/com.apple.appstore
   • rm -r ~/Library/Caches/com.apple.storeagent
10. Close the folder and restart your Mac.
11. Then, try re-downloading your files that were causing problems before.

If this doesn’t solve the problem and your Mac App Store won’t download anything, the next solution is re-indexing. Your Mac uses Spotlight to determine what apps you have installed. And perhaps, due to a bug or a corrupted file, your operating system thinks that the app you are trying to download is already in your system which is why it is not letting you download it again.

To re-index your applications, follow these steps.

Why Won't My Mac Update

1. Go the Apple Menu and go to System Preferences > Spotlight > Privacy tab. This opens the Spotlight preferences pane.
2. Add your primary HD (the default name is Macintosh HD) by clicking the + and selecting your HD. This will stop your OS X from indexing that particular drive.
3. Close the System Preferences window.
4. Click the Apple Logo and choose Log Out.
5. Log back in and navigate back to the Spotlight preferences window.
6. Click the – button and select your HD.
7. Close the System Preferences window.

The system will begin re-indexing everything in your HD. If you see a dot in the center of the magnifying glass, which can be found at the top right of the menu bar, then that means the re-indexing is ongoing.

Open the App Store to re-download the app or update what you were downloading previously.

Force quit the app, then open it again

Why Won T My App Open On Mac Computer

• iPhone, iPad, iPod touch: Force the app to close.
• Apple Watch: With the app open, press and hold the side button to show the power options. Then press and hold the Digital Crown to quit the app.
• Apple TV: Double press the TV/Home button and swipe left or right to find the app with the issue. Then swipe up to close the app. You can’t force apps to quit on Apple TV (3rd generation).
  

Why Won't My App Open On Mac

Restart your device

Restart your iPhone, iPad, iPod touch, Apple Watch, or Apple TV. Then open the app to see if it works as expected.

Check for updates

Make sure that your device has the latest version of iOS or iPadOS, watchOS, or tvOS. Then check for app updates.

• iPhone, iPad, iPod touch, or Apple Watch: You can manually update apps. You might need a Wi-Fi connection to update some apps on your iPhone, iPad, or iPod touch.
• Apple TV: Go to Settings > Apps and turn on Automatically Update Apps. If you don't have automatic updates turned on, you can open the App Store, go to the Purchased tab, and open an app's product page to see if an update is available.
  

Reinstall the app

• iPhone, iPad, iPod touch: Open the Settings app. Tap General, then tap iPhone Storage (or iPad Storage). Tap the affected app, then tap Offload app. Tap Offload app again. Wait a moment for the app to offload, then tap Reinstall App.
• Apple TV: Highlight the app on the Home screen, then press and hold the Touch surface until the app jiggles. Press Play/Pause, then select Delete. Open the App Store and redownload the app. Some apps require subscriptions for activation. If you can't activate the app or you don’t remember your sign-in information, contact the app developer.
• Apple Watch: Open the Watch app on your iPhone and tap the My Watch tab. Scroll to the app you want to remove, then tap it. Turn off Show App on Apple Watch, and wait for it to disappear from your watch's Home screen. To reinstall the app, scroll down to Available Apps in the My Watch tab and tap Install.
  

Contact the app developer

If you're having an issue with an Apple app, contact Apple Support. If it's a third-party app, contact the app developer.

Why Wont My App Store Open On Mac

Learn more

• Get help with unfamiliar charges and in-app purchases.
• If you can’t install or update an app, or if it’s stuck waiting, learn what to do.
• Get help with audio, video, or power on Apple TV.