Quick Summary
Error 102 on macOS typically indicates a problem connecting to the App Store servers. This connection issue can prevent you from downloading, updating, or accessing the App Store properly.
Common Causes
- Network Connectivity Issues: A weak or unstable internet connection can prevent your Mac from communicating with the App Store servers.
- Incorrect Date and Time Settings: If your Mac's date and time are incorrect, it can cause issues with secure connections to the App Store.
- Firewall or Router Restrictions: Your firewall or router settings may be blocking access to the App Store servers.
- App Store Server Issues: Occasionally, the App Store servers themselves may be experiencing problems, leading to connectivity errors.
- Corrupted App Store Cache: A corrupted cache can impede your ability to connect to the app store
Step-by-Step Fixes
Method 1: Check Your Internet Connection
Step 1: Ensure your Mac is connected to a stable internet connection, preferably via Ethernet if possible. Try browsing the web to confirm your internet is working.
Step 2: If using Wi-Fi, try restarting your router and modem. Wait a few minutes, then reconnect your Mac to the Wi-Fi network.
Method 2: Verify Date and Time Settings
Step 1: Go to System Preferences -> Date & Time.
Step 2: Ensure that 'Set date and time automatically' is selected. If it is already selected, deselect it, wait a few seconds, and then reselect it.
Step 3: Check that the Time Zone is set correctly.
Method 3: Check Firewall Settings
Step 1: Go to System Preferences -> Security & Privacy -> Firewall.
Step 2: Check if the firewall is enabled. If it is, make sure that the App Store and related services are not blocked. You might need to temporarily disable the firewall to test if it's causing the issue.
Method 4: Clear App Store Cache
Step 1: Open Finder.
Step 2: Select 'Go' in the menu bar, then 'Go to Folder...'
Step 3: Type: ~/Library/Caches/com.apple.appstore and press Enter.
Step 4: Move the contents of this folder to the trash can.
Step 5: Type: ~/Library/Caches/com.apple.storeagent and press Enter.
Step 6: Move the contents of this folder to the trash can.
Step 7: Restart your Mac.
Method 5: Restart Your Mac
Step 1: Click the Apple menu in the top-left corner of your screen.
Step 2: Select 'Restart'.
Step 3: After your Mac restarts, try accessing the App Store again.
Method 6: Check App Store System Status
Step 1: Visit the Apple System Status page (search for it online).
Step 2: Verify that the App Store is not experiencing any reported outages or issues. If there are known issues, the problem may be on Apple's end, and you'll need to wait for them to resolve it.