Quick Summary
Error 9002 on macOS typically indicates a problem connecting to the Apple App Store servers, preventing downloads or updates. This error often arises from network connectivity issues, incorrect system settings, or temporary App Store outages.
Common Causes
- Network Connectivity Issues: A weak or unstable internet connection can disrupt communication with the App Store, leading to download failures and the 9002 error.
- App Store Server Outage: Occasionally, the Apple App Store servers may experience temporary outages or maintenance, making it impossible to download or update applications.
- Incorrect Date & Time Settings: Inaccurate date and time settings on your Mac can cause authentication problems when connecting to secure servers like the App Store.
- Corrupted App Store Cache: A corrupted cache related to the App Store can interfere with downloads and other App Store functions.
- Firewall or Security Software Interference: Firewall settings or security software may be blocking the App Store's access to the internet.
Step-by-Step Fixes
Method 1: Check Your Internet Connection
Step 1: Verify that your Mac is connected to the internet. Try opening a web page in Safari.
Step 2: If you are using Wi-Fi, ensure you are connected to a stable network with a strong signal.
Step 3: Try restarting your modem and router.
Step 4: Consider using a wired Ethernet connection to rule out Wi-Fi issues.
Method 2: Check Apple System Status
Step 1: Visit the Apple System Status page (search "Apple System Status" on apple.com).
Step 2: Check if there are any reported outages or maintenance affecting the App Store. If there is an outage, wait for Apple to resolve the issue.
Method 3: Verify Date and Time Settings
Step 1: Go to System Preferences -> Date & Time.
Step 2: Ensure that "Set date and time automatically" is checked. If it is, uncheck it, wait a few seconds, and then check it again.
Step 3: Alternatively, manually set the correct date and time if automatic configuration is not working.
Method 4: Restart Your Mac
Step 1: Click the Apple menu in the top-left corner of your screen.
Step 2: Select "Restart..."
Step 3: Wait for your Mac to restart and then try downloading or updating the app again.
Method 5: Sign Out and Sign Back In to the App Store
Step 1: Open the App Store application.
Step 2:From the Menu Bar, select: Store > Sign Out.
Step 3: Then, select: Store > Sign In, and enter your Apple ID credentials.
Step 4: Try downloading or updating the app again.
Method 6: Clear App Store Cache (Using Terminal)
Step 1: Open Terminal (Applications -> Utilities -> Terminal).
Step 2: Run the following command:
Step 3: open $TMPDIR../C/com.apple.appstore/ and press Enter.
Step 4: Delete the contents of that folder
Step 5: Empty the Trash.
Method 7: Check Firewall Settings
Step 1: Go to System Preferences -> Security & Privacy -> Firewall.
Step 2: Ensure that the firewall is not blocking the App Store's access to the internet. The firewall should either be turned off for testing or configured to allow incoming and outgoing connections for the App Store.
Step 3: Also, check any third-party security software you have installed, such as antivirus programs, to ensure they are not interfering.
Method 8: Run in Safe Mode
Step 1: Shut down your Mac.
Step 2: Start it up again, and immediately press and hold the Shift key. Release the Shift key when you see the login window
Step 3: Attempt to download the app in Safe Mode.
Step 4: Restart your computer normally to exit Safe Mode.