Issue Description
Touch ID fails to recognize fingerprint or stops responding.
Common Causes
- Dirty fingerprint sensor
- Corrupt Touch ID data
- System glitches
Step-by-Step Solution
Step 1: Clean Touch ID Sensor
- Use a dry microfiber cloth
- Avoid liquids
Step 2: Re-add Fingerprints
- System Settings → Touch ID & Password
- Remove all fingerprints
- Restart Mac
- Add fingerprints again
Step 3: Check Secure Enclave (Apple Silicon)
- Restart Mac
- Ensure macOS is fully updated
Step 4: Test with Password
- Confirm fallback password works
Explore Further
- Reset NVRAM (Intel Macs)
Prevention & Best Practices
Avoid wet fingers during use.