How to Fix Flickering or Flashing Webcam During Zoom Calls

Most artificial lighting — fluorescent and LED bulbs particularly — actually flickers constantly at a rate tied to your electrical grid's AC frequency, far too fast for human eyes to perceive directly. Cameras, however, capture individual frames at their own separate rate, and when a camera's frame rate falls out of sync with that invisible lighting flicker, the mismatch becomes visible as banding, flashing, or rolling horizontal lines in the resulting video, even though the room looks perfectly normal to your own eyes.

Camera manufacturers build in an anti-flicker correction setting specifically to compensate for this, synchronizing the camera's capture timing to match either 50Hz or 60Hz grid frequency. The problem arises when this setting doesn't match your actual local grid frequency — a camera manufactured or configured with a default suited to one region can flicker visibly when used in a region running the other frequency.

This is worth distinguishing from a genuinely different, less common cause: a failing or aging bulb itself flickering visibly even to the naked eye, which is a lighting hardware problem rather than a camera settings issue, and needs a different fix (replacing the bulb) entirely.

Step 1: Check your camera's own control panel or driver software

For an anti-flicker or "light frequency" setting, often listed as 50Hz, 60Hz, or Auto.

Step 2: Set it to match your actual region's grid frequency

— 50Hz for most of Europe, Asia, Africa, and Australia; 60Hz for North America and parts of South America and Asia.

Step 3: If your camera has no dedicated setting, check Windows' own camera settings

Which occasionally includes a similar flicker-reduction option under advanced device settings.

Step 4: Try "Auto" if available

Rather than manually guessing, since many modern cameras can detect and automatically correct for the actual local frequency.

Step 5: If flickering persists regardless of this setting, replace the specific bulb

Causing it, since an aging or failing bulb can flicker in ways no camera-side setting can fully compensate for. ↑ Confirm the fix with the widget above.

How do I reset the Windows Camera app itself?

Go to Settings → Apps → Installed apps, find Camera, open its three-dot menu, and choose Advanced options → Reset. This clears the built-in Camera app’s own cache and settings without uninstalling it, which can fix a stuck, frozen, or permanently black preview even when the underlying device and driver are both working correctly. It only resets that one app — not your camera driver, and not other applications that use the camera.

Could my antivirus be silently blocking my camera?

Many third-party security suites — Bitdefender, Kaspersky, Norton, and ESET among others — include their own webcam-protection feature that runs independently of Windows’ own privacy settings. That means Windows can show camera access as fully permitted while the antivirus software blocks it anyway, at a layer Windows has no visibility into. Check the antivirus program’s own settings, usually under a Privacy, Webcam Protection, or similarly named section, and confirm your browser or conferencing app is on its allow-list.

How do I re-enable my camera in Device Manager if it's disabled?

Right-click the Start button → Device Manager, expand Cameras or Imaging devices, and look for a greyed-out icon or a small down-arrow badge. Right-click that entry and choose Enable device. This is a different action from updating a driver — a disabled device won’t respond to any other fix until it’s explicitly re-enabled here first, so it’s worth checking before assuming the problem is a driver or a permission.

Is Windows' own camera privacy toggle blocking access, separately from anything else?

Windows keeps a system-level camera permission at Settings → Privacy & security → Camera, completely separate from Device Manager, the Camera app, and any antivirus software. This one screen has a master Camera access switch plus a per-app list beneath it — both need to be on. It’s worth checking directly, since a camera can show as fully enabled and working in Device Manager while this toggle silently blocks every app from reaching it.