The safest place to get apps for your Mac is the App Store. Apple reviews each app in the App Store before it’s accepted and signs it to ensure that it hasn’t been tampered with or altered. If there’s ever a problem with an app, Apple can quickly remove it from the store.
If you download and install apps from the internet or directly from a developer, macOS continues to protect your Mac. When you install Mac apps, plug-ins, and installer packages from outside the App Store, macOS checks the Developer ID signature to verify that the software is from an identified developer and that it has not been altered. By default, macOS Catalina also requires software to be notarized, so you can be confident that the software you run on your Mac doesn't contain known malware. Before opening downloaded software for the first time, macOS requests your approval to make sure you aren’t misled into running software you didn’t expect.
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Running software that hasn’t been signed and notarized may expose your computer and personal information to malware that can harm your Mac or compromise your privacy.
I needed a simple way to unzip files on my iPad and iPhone. This app solved my problem. I tap on the zip file, whether in an email or on Safari, hit 'Open In' and get a menu pop up that shows my options. I hit Zip Tool and my files are automatically loaded into the app. It asks if you want to unzip the file. If you trust the developer, you can tell your Mac to open it anyway. Warning: Gatekeeper is a security feature, and it’s on by default for a reason. Only run apps you trust. To open an unsigned app, you need to right-click or Control-click the app and select “Open”. This works on macOS Sierra as well as previous versions of macOS. Open the App Store. Browse or search for the app that you want to download. Apps for iPhone, iPad, and iPod touch don't always have a version for Mac. Click the price, then click Buy App. If you don't see a price, click Get, then click Install App. You might need to sign in with your Apple ID.
View the app security settings on your Mac
By default, the security and privacy preferences of your Mac are set to allow apps from the App Store and identified developers. For additional security, you can chose to allow only apps from the App Store.
In System Preferences, click Security & Privacy, then click General. Click the lock and enter your password to make changes. Select App Store under the header “Allow apps downloaded from.”
Open a developer-signed or notarized app
If your Mac is set to allow apps from the App Store and identified developers, the first time that you launch a new app, your Mac asks if you’re sure you want to open it.
An app that has been notarized by Apple indicates that Apple checked it for malicious software and none was detected:
Prior to macOS Catalina, opening an app that hasn't been notarized shows a yellow warning icon and asks if you're sure you want to open it:
If you see a warning message and can’t install an app
If you have set your Mac to allow apps only from the App Store and you try to install an app from elsewhere, your Mac will say that the app can't be opened because it was not downloaded from the App Store.*
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If your Mac is set to allow apps from the App Store and identified developers, and you try to install an app that isn’t signed by an identified developer or—in macOS Catalina—notarized by Apple, you also see a warning that the app cannot be opened.
If you see this warning, it means that the app was not notarized, and Apple could not scan the app for known malicious software.
You may want to look for an updated version of the app in the App Store or look for an alternative app.
If macOS detects a malicious app
If macOS detects that an app has malicious content, it will notify you when you try to open it and ask you to move it to the Trash.
How to open an app that hasn’t been notarized or is from an unidentified developer
Running software that hasn’t been signed and notarized may expose your computer and personal information to malware that can harm your Mac or compromise your privacy. If you’re certain that an app you want to install is from a trustworthy source and hasn’t been tampered with, you can temporarily override your Mac security settings to open it.
In macOS Catalina and macOS Mojave, when an app fails to install because it hasn’t been notarized or is from an unidentified developer, it will appear in System Preferences > Security & Privacy, under the General tab. Click Open Anyway to confirm your intent to open or install the app.
The warning prompt reappears, and you can click Open.*
The app is now saved as an exception to your security settings, and you can open it in the future by double-clicking it, just as you can any authorized app.
*If you're prompted to open Finder: control-click the app in Finder, choose Open from the menu, and then click Open in the dialog that appears. Enter your admin name and password to open the app.
If you have iTunes installed on your computer, choose your device to update to the latest version of iTunes.
If you have a Mac
If you update your Mac to macOS Catalina, your iTunes media library can be accessed in the Apple Music app, Apple TV app, Apple Books app, and Apple Podcasts app. To manually back up, restore, or sync your iPhone, iPad, or iPod touch, use Finder.
If you can’t update to the latest version of macOS
You can update to the latest version of iTunes (up to iTunes 12.8).
- Open the App Store on your Mac.
- Click Updates at the top of the App Store window.
- If any iTunes updates are available, click Install.
If you have a PC
If you don't have iTunes installed on your computer, get it from the Microsoft Store (Windows 10) or download the latest version from Apple's website.
Depending on the version of iTunes that you have, there are a few ways to update. Software 10 6 mac.
If you downloaded iTunes from the Microsoft Store
Versions of iTunes from the Microsoft Store update automatically when new versions are released.
You can also check for updates through the Microsoft Store.
If you downloaded iTunes from Apple's website
- Open iTunes.
- From the menu bar at the top of the iTunes window, choose Help > Check for Updates.
- Follow the prompts to install the latest version.
If Check for Updates isn't an option in the Help menu, you downloaded iTunes from the Microsoft Store.
Learn more
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- Learn how to update your iPhone or iPod touch to the latest version of iOS, and iPad to the latest version of iPadOS.
- Learn how to update your Mac.
Open Mac App Store
iTunes features might vary by country or region.