Issue Description
Software Update does not appear or shows “Unable to check for updates.”
Common Causes
- Corrupt update preferences
- Network restrictions
- Apple ID sync issues
Step-by-Step Solution
Step 1: Check Network Connection
- Confirm internet access
- Disable VPN temporarily
Step 2: Restart Software Update Services
- Restart Mac
- Retry System Settings → General → Software Update
Step 3: Clear Update Cache
- Finder → Go → Go to Folder
/Library/Updates
- Delete contents (not folder)
Step 4: Update via Terminal
- Open Terminal
softwareupdate –list
Explore Further
- Download macOS installer from App Store
Prevention & Best Practices
Keep system time and date accurate.