Windows Hello — face recognition, fingerprint sign-in, PIN — is one of those features you don’t appreciate until it stops working and you’re typing a password like it’s 2015. On Dell laptops, Hello breaks most often from driver updates, BIOS settings, or TPM changes, and the fix depends on which piece actually failed.

This guide covers face, fingerprint, and PIN issues together, since they share the same underlying plumbing. Work through it in order.

Why this happens

  • Biometric driver updated or corrupted. A Windows Update or Dell Update swapping in a bad fingerprint or IR camera driver.
  • Camera or fingerprint reader disabled. Turned off in BIOS, Device Manager, or by a privacy shutter / kill switch.
  • TPM state changed. A BIOS update or TPM clear invalidates the Hello credentials tied to the TPM.
  • Windows update reset Hello enrollment. Feature updates occasionally wipe biometric templates.
  • Privacy software blocking the camera. Antivirus camera guards or privacy tools disabling the IR camera.
  • Corrupted Hello credential store. Damaged NGC (Next Generation Cryptography) folder breaking PIN and biometrics together.
  • BIOS/firmware incompatibility. Older BIOS not exposing the biometric device correctly to newer Windows builds.

How to fix it

Work through these in order — hardware checks first, then drivers, then credential repair.

Fix 1: Check the physical basics

Rule out the embarrassingly simple causes first.

  1. If your Dell has a camera privacy shutter, slide it open. Some shutters block the IR camera Hello needs even when the regular webcam seems fine.
  2. Clean the fingerprint reader with a soft, dry cloth — skin oils genuinely degrade recognition.
  3. Check for a camera kill switch (function key or physical switch on some Dell models) and make sure it’s on.
  4. Try Hello again. If a shutter or switch was the issue, re-enroll isn’t needed — it just works.

Fix 2: Verify the devices in BIOS

Make sure the hardware is enabled at the firmware level.

  1. Restart, press F2 at the Dell logo to enter BIOS Setup.
  2. Look under Security or System Setup for camera and fingerprint reader toggles — enable both.
  3. Check that TPM 2.0 is enabled under Security — Hello depends on it.
  4. Save and exit. In Windows, open Device Manager and confirm the biometric devices appear without warning icons.

Fix 3: Reinstall the biometric drivers from Dell

Don’t trust generic Windows drivers for Hello hardware.

  1. In Device Manager, expand Biometric devices and Cameras (or Imaging devices).
  2. Right-click the fingerprint sensor and IR camera, choose Uninstall device, and tick Attempt to remove the driver if offered.
  3. Download the latest fingerprint and camera/IR camera drivers for your exact model from Dell support using your service tag.
  4. Install them, restart, and check Settings > Accounts > Sign-in options — Hello options should be configurable again.

Fix 4: Re-enroll your biometrics

If the hardware is fine but recognition fails, the templates are likely stale or corrupt.

  1. Go to Settings > Accounts > Sign-in options.
  2. Under Facial recognition or Fingerprint recognition, click Remove.
  3. Click Set up and follow the enrollment wizard — add the same finger twice (two entries) for better reliability.
  4. Test sign-in immediately. Fresh templates after a driver reinstall solve most “it was working yesterday” cases.

Fix 5: Reset the PIN via the NGC folder

When the PIN itself errors out, the credential store is usually corrupt.

  1. Open File Explorer, navigate to C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\NGC. (You’ll need to take ownership to view it — that’s normal.)
  2. Delete everything inside the NGC folder (not the folder itself).
  3. Go to Settings > Accounts > Sign-in options > PIN, click Set up, and create a new PIN.
  4. Re-enroll biometrics afterward, since they depend on the PIN as a fallback.

Fix 6: Check TPM health

Hello’s credentials live in the TPM; a confused TPM breaks Hello.

  1. Press Win + R, type tpm.msc, and press Enter. Confirm it reports TPM 2.0 and “ready for use.”
  2. If the TPM shows errors after a BIOS update, you may need to clear it: Settings > Update & Security > Windows Security > Device security > Security processor > Security processor troubleshooting > Clear TPM. Warning: this removes Hello credentials — you’ll re-enroll everything after.
  3. Restart and set up Hello fresh.

Fix 7: Disable camera-blocking software

Privacy tools love to break Hello Face silently.

  1. Open your antivirus and look for webcam/camera protection features — add an exception or disable the camera guard.
  2. Check Settings > Privacy & security > Camera and make sure Camera access is on and desktop apps can use it.
  3. Uninstall any “privacy” utilities that manage camera access, restart, and test Hello Face.

Fix 8: Update BIOS and run Dell diagnostics

When nothing else explains it, check firmware and hardware.

  1. Update to the latest BIOS for your model from Dell support — release notes sometimes mention Hello/biometric fixes explicitly.
  2. Run Dell’s pre-boot diagnostics (F12 > Diagnostics) and include the system board tests.
  3. If diagnostics fail the fingerprint reader or IR camera, it’s a hardware fault — a warranty repair. For general biometric troubleshooting background, see Microsoft’s Windows Hello documentation .

For Hello issues on other brands, see our Lenovo , ASUS , and Acer variants, or the 24H2-specific Hello guide .

Closing

Windows Hello on Dell laptops breaks at one of three layers: the hardware switch, the driver, or the credential store — and the fixes above walk those layers in order. Check the shutter, reinstall Dell’s drivers, reset the PIN store, and you’ll be back to password-free sign-in. If Hello breaks again after the next feature update, start at Fix 3 — driver reinstalls are the recurring theme with this feature.

Frequently asked questions

Why is Windows Hello suddenly not available on my Dell?
The most common reasons are a driver update that broke the biometric device, the camera or fingerprint reader being disabled in BIOS or Device Manager, or a Windows update that reset Hello enrollment. Less often, the TPM state changed (after a BIOS update), which invalidates Hello credentials. The fixes below walk through each in order.
Do I need to set up Windows Hello again after fixing it?
Often, yes. If the fix involved reinstalling the biometric driver, resetting the TPM, or removing the device, your stored biometric templates are gone and you’ll re-enroll fingerprints or face under Settings > Accounts > Sign-in options. Re-enrollment takes two minutes and is normal after driver-level repairs.
My fingerprint reader works but face recognition doesn't. Why?
They’re separate hardware with separate drivers. Face recognition needs an IR camera plus the Windows Hello Face driver; the fingerprint reader uses its own sensor and driver. Fix them independently — update each device’s driver in Device Manager and re-enroll each method separately under Sign-in options.
Can antivirus or privacy software block Windows Hello?
Yes. Camera-blocking features in antivirus suites or privacy tools can disable the IR camera Windows Hello Face needs, and some ‘privacy’ utilities disable biometric services entirely. If Hello broke after installing security software, check its camera and privacy-shield settings first.