Resolving the "Can't Open,因为它来自未识别的开发者" Issue

This error occurs when the app developer hasn't registered with Apple or neglected the verification process. When this happens, you'll see an error message when trying to install or launch the app that reads, “The app can't be opened because it's from an unidentified developer.” The app won't install or launch when you see this error.

Fortunately, fixing and running these apps is straightforward, and this article will show you how. It's a common warning that can be easily resolved with the methods mentioned here. Let's get started!

Apps from unidentified developers can't be opened.

Apple has its Developer ID program and app-review process to minimize the chances of users encountering viruses on macOS. Developers need to register with Apple and submit their apps for evaluation. If an app doesn't contain malicious code (malware), it is approved and signed. This ensures that the apps users download and install are secure.

That's what happens when you try to install an app from an unknown developer. Something similar can occur if an approved developer releases an app before Apple has had a chance to vet it. Alternatively, an app that is made public before it has completed the registration and review process can trigger the same error. Ultimately, without Apple's stamp of approval, there is no way to know for sure that an app is safe.

Solutions for "Can't Open Because the Developer is Unidentified"

This warning doesn't mean the app is malicious, or that you shouldn't open apps from unidentified developers on your Mac. To use the app, you can either disable Gatekeeper entirely, or bypass it if you're sure the software comes from a reputable source. If you can't seem to open an app from an unverified developer, try the following options.

• 1. Open Unknown Apps by Right-Clicking
• 2. Remove File Quarantine Attribute
• 3. Allow Opening of Any App in Privacy & Security
• 4. Check the Mac App Store

1. Right-click to open an unrecognized app

One of the easiest ways to run an app from an unidentified developer on a Mac is to launch it by right-clicking. You can bypass the security settings through the context menu and start the app as you normally would. Here's how:

Step 1: Locate the application in the Applications folder.

Step 2: Control-click the app.

Step 3: Click the "Open" button from the pop-up menu.

Step 4: Click "Turn On" again.

Then you can double-click it just like any other authorized app, and it will be stored as a secure app for future use.

Remove extended attributes from a file

When an app is installed over the Internet using Airdrop from an HTTP or HTTPS location, the downloading app attaches a separate flag to the link. Gatekeeper can then use the com.apple.quarantine property to determine whether the app needs to be verified or restricted.

If you want to bypass Gatekeeper or accidentally allow apps from an unauthorized developer, you can remove this attribute with these steps:

Step 1: Launch Terminal from the Utilities folder within your Applications folder.

Step 2: Type in xattr, followed by a space, and then drag the file you want to open into Terminal. Press "Enter" to check if the restricted app has the com.apple.quarantine attribute. If it does, Terminal will display the attribute: xattr file_path

Step 3. To remove the quarantine attribute, run the following command: sudo xattr -r -d com.apple.quarantine file_path

Type sudo xattr -r -d com.apple.quarantine, leave a space, then drag the application to the Terminal to add its path, and press "Enter."

Step 4: Press "Enter" after typing in your administrator password. The "-r" in the command specifies the document within the app that needs to be sandboxed, while the "-d" option deletes these files. This should allow you to launch the application.

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3. Tap “Open Anyway” under Privacy & Security.

You can authorize the restricted app to open by clicking Allow Anyway in Privacy & Security. This button will be available for an hour after you attempt to open the app. Here's how to allow an app from an unidentified developer to launch on macOS:

1. Click the “Apple” menu and select “System Preferences.”

Step 2: Click on “Privacy & Security” from the left sidebar.

Step 3: Click “Security.”

Step 4: Click "Open Anyway."

Step 5: Click Open to run the app if you're sure you trust it.

4. Check the Mac App Store

This article showcases the best methods to allow exceptions and launch an app from an unauthorized developer on your Mac using the first three solutions. If the app still doesn't work, you can change the Security & Privacy settings to allow apps downloaded from Anywhere. This is how you can allow apps from unverified developers to open on your Mac.

If "Anywhere" is not an option and is hidden by default, you'll need to disable the Gatekeeper to show it. Here's how to allow your Mac to install or run apps from unidentified developers through Terminal:

Step 1: Open the Terminal.

Step 2. Type this command and press Enter: sudo spctl --master-disable

Step 3: Type in your administrator password and press “Enter.”

4. Check the Allow apps downloaded from: option next to Anywhere.

Since disabling Gatekeeper could leave you vulnerable to malware, you should re-enable it after you've launched the application. Do this by running the command sudo spctl --master-enable in Terminal.

Recover Data When Your Mac Is Stuck

Owing to Mac issues, users might lose important data instantly. Therefore, using a professional data recovery tool is crucial to ensure the safety of your data. The Mac Data Recovery Wizard is a powerful data recovery program that helps retrieve lost data from unintended deletion, emptied Trash, and other instances of data loss.

As a powerful data recovery utility, the Mac tool can handle various tricky data loss situations, and many Apple users install it even without a Time Machine backup to recover deleted files from Mac Trash. If your Mac is stuck on the loading screen and you can't access your data, these tools will help you restore files from an unbootable system to cloud storage with a high success rate. The advantages include:

• It features an intuitive interface suitable for beginners, making it easy for users of different levels to get started.
• It can recover various types of files, with a particular strength in document recovery.
• It performs well in diverse data loss scenarios, enabling swift data recovery.

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Step 1: Select the location to scan

Launch the Mac Data Recovery Wizard, select the hard drive, SSD, SD card, USB flash drive, or TF card from which you lost data. Click "Start" to begin scanning for lost files.

Note: Before the data recovery, it is recommended that you click “Disk Backup” on the left sidebar to back up your Mac first. This prevents further data loss. After the backup, the software can recover data from the Mac backup, and your computer can write new data again.

Select a location, then click "Search Lost Files".

Step 2: Filter Lost Mac Data

The software will automatically scan the lost data on your MacBook or iMac. After the scan, you can filter the required data by clicking the "Type" and "Path" buttons.

Step 3: Recover Lost Data or Files

Preview the files and then click on the “Recover” button to restore the lost data to another location.

Last Words

Receiving the “Unidentified Developer” alert doesn't necessarily mean that you're about to install malware. Apple notes that there are several instances where a fully authorized company might not appear on the list; one of the reasons could be that the app exceeds the parameters of the company's developer program for enterprises. If you've lost data due to this error, you should install the Data Recovery Wizard for Mac utility.

"Frequently Asked Questions about 'Can't Open, because it's from an unidentified developer'"

Here are some common issues to consider:

1. How to Allow Mac to Open Apps from Unidentified Developers? On a Mac, when you try to open an app from an unidentified developer, the system blocks it and displays a warning. To run such an application, follow these steps: 1. Locate the app you want to open. 2. Click on its icon to select it. 3. Right-click (or Control-click) the app, then choose "Open" from the pop-up menu. 4. A warning dialog will appear asking if you're sure you want to open the app. Click "Open." If you wish to permanently allow all apps from this developer, do the following: 1. Open "System Preferences." 2. Click on "Security & Privacy." 3. Under the "General" tab, find the "Allow apps downloaded from" setting at the bottom. 4. If it's currently set to "App Store," click the lock icon to enter your administrator password and change it to "Anywhere." Note: This option might not be available in macOS Catalina and later versions. 5. After changing the setting, you should be able to freely open and run apps from unidentified developers. Please note that allowing apps from any source may increase the risk of malware, so exercise caution and only do this for trusted sources.

In that case, you'll need to open “System Preferences,” navigate to the “Security & Privacy” tab, click the “Lock” icon, and enter your password to make changes. From there, set “Allow apps downloaded from” to “App Store and identified developers,” both of which are vetted by Apple.

2. How do I open a Jar file from an unidentified developer on my Mac?

Control-click the app to open it anyway. The most direct way to run an app from an unidentified developer on your Mac is to control-click it and choose Open. You can override the security settings with this quick option to launch the app as you normally would.

3. What is the “Unidentified Developer” warning on a Mac?

If you try to open an app that isn't signed by Apple or a developer, you'll see a warning. This doesn't necessarily mean that the app is problematic; for example, some apps were created before developer ID certification began.

4. How to install a DMG from an untrusted developer?

To view the contents of a .DMG file, simply double-click it; its contents usually appear in a Finder window as a folder. To install an application (which may require an administrator password), drag it from the .DMG window to the Applications category. When the copying is done, wait.