Microphone not working — fix Windows, Mac, iPhone, and call apps

The three places a mic gets blocked

This is the part that trips up almost everyone, so it’s worth being precise about it. There are three separate layers between your microphone and the person who can’t hear you, and each one can silence you independently.

The first is operating system permission. Windows, macOS, and iOS all have a master privacy toggle plus a per-app list. If your browser isn’t ticked there, nothing else you do will matter.

The second is browser permission. When a website asks to use your mic and you click Allow, that grants permission at the site level only. It has no effect on whether Windows or macOS is letting the browser record in the first place.

The third is the app’s own device selection. Teams, Zoom, and Meet each keep their own dropdown of input devices, and they routinely pick the wrong one after you plug in a new headset.

Fix only one of these layers and the mic still looks dead. That’s why people spend an hour reinstalling drivers when a checkbox was the problem.

Work out which layer is broken

A couple of quick checks will tell you where to spend your time.

Open your operating system’s sound settings and watch the input meter while you talk. If that meter moves, your hardware and drivers are fine and the problem is somewhere above them. If it never moves, no app or website can conjure up a signal.

Then try a second app. If Voice Recorder or Voice Memos captures your voice but Zoom doesn’t, you’ve narrowed it to Zoom’s permission or its device picker. If nothing anywhere hears you, work down from the system privacy settings.

Finally, if you have a second computer to hand, plug the headset into it. A mic that fails everywhere is a hardware or cable problem, and you can stop reading settings menus.

Windows 10 and Windows 11

Mic problems on Windows land in three places: privacy, the default device, and audio enhancements.

Privacy comes first. Open Settings, then Privacy & security, then Microphone, and turn microphone access on. Enable it for desktop apps and for your browser specifically. When the master toggle is off, everything fails at once, including apps that worked yesterday. Windows sometimes resets browser access during a feature update while leaving desktop apps untouched, which is exactly why “Chrome broke but Voice Recorder still works” is such a common complaint.

Next, pick the right input. Go to Settings, System, Sound on Windows 11, or the classic Sound control panel on Windows 10, and set your headset or USB mic as the input device. When two mics are active, apps guess, and they guess wrong. Unplug or disable whichever one you’re not using while you troubleshoot.

Then check gain and enhancements. Open the input device’s properties and raise the input volume if you’re coming through as a whisper. Turn audio enhancements off if the level is tiny, robotic, or keeps cutting out. Manufacturer noise-suppression stacks are a frequent cause of a mic that looks perfectly connected but never reaches a usable level.

One more thing worth knowing: some USB interfaces fail when another app has claimed them exclusively, so close any leftover call windows and try again. Bluetooth headsets that play music happily but refuse to record are usually stuck on the wrong profile, so disconnect, reconnect, and reselect the hands-free input entry.

Mac

For a microphone not working on Mac, open System Settings, Privacy & Security, Microphone, and enable the apps that need to record. Your browser especially. If the browser isn’t ticked here, macOS won’t give you a useful prompt at the site level either.

Now open System Settings, Sound, Input, choose the correct device, and watch the level meter as you speak. That meter is your ground truth. If it moves here but not in Safari or Chrome, go back and check the site permission and reload the tab.

The classic Mac failure is simply the wrong input being selected after you plug in AirPods or a USB-C dongle, because the Mac quietly keeps the built-in mic as default. Re-pick the headset under Sound, Input, and then re-pick it inside the call app too. External mics that only stop working after the Mac wakes from sleep usually need a Bluetooth toggle or a cable reseat rather than any kind of reinstall.

iPhone

An iPhone microphone not working splits into two paths worth separating: the mics used for phone calls, and apps that record or join meetings.

Open Settings, Privacy & Security, Microphone, and confirm the app you’re using is allowed. Force-quit that app, toggle Airplane mode on and off once, then try recording something in Voice Memos. If Voice Memos captures cleanly but one meeting app doesn’t, revoke and re-grant that app’s mic permission.

Physical obstruction matters more on phones than on laptops. A thick case or pocket lint in the bottom grille produces call failures that look convincingly like software. Take the case off and clean the openings gently with a soft brush. If callers can’t hear you but you can hear them perfectly, you’re dealing with the voice mic path rather than the whole audio system.

With AirPods, open Control Center during a call, long-press the audio card, and check that audio is genuinely routed to the buds. Phones will cheerfully keep using the handset mic while playing sound through your AirPods.

Teams, Zoom, and Google Meet

App-specific failures are the highest-volume case by far, and device selection explains most of them.

In Microsoft Teams, open Settings then Devices, or use the pre-join device menu, and select your headset mic by name. Teams often stays stuck on “Same as system” after you plug in new hardware, so force the named device. Check the in-meeting mute button too, along with any mute-on-entry policy your organisation has set.

In Zoom, go to Settings then Audio, speak, and watch Zoom’s own input meter. If your voice vanished after an update, temporarily disable Zoom’s advanced audio processing. Worth remembering: browser Zoom and the desktop app don’t share permissions, so allowing the mic in Chrome does nothing for the desktop client.

For Google Meet, pick your mic in the device menu before you join. In Chrome, click the padlock in the address bar, go to Site settings, Microphone, and set it to Allow, choosing the right device if Chrome lists several. Meet problems that disappear in a different browser are site permission or Chrome’s sticky per-site device setting almost every time.

If the mic works in Meet but not Zoom, stop looking at Windows drivers. Line up the system permission for each app, then make each app’s dropdown point at the same piece of hardware.

Headsets, AirPods, and the hardware cases

AirPods that play music fine but won’t record are extremely common, because the listening profile connects easily while the recording path is fussier. Re-pair them, charge the case, try one bud at a time, and check the input list during an actual call.

USB headsets need their mic endpoint selected, not just the headphone endpoint. On combo dongles, try a different USB port, ideally a rear one on a desktop. A 3.5 mm headset mic that won’t work on a laptop is often a wiring standard mismatch, or a port that only supports headphones, and a cheap USB adapter is a fair way to test that theory.

Laptop lids and privacy shutters don’t mute microphones, but manufacturer mic-mute keys absolutely do. Look for a small LED on the F-row before you open Device Manager.

If you mainly want to know whether the headset’s left and right playback are healthy rather than its recording, a separate headphone channel check is the right follow-up once the mic side is sorted.

Quiet, muffled, or muted rather than dead

A mic that works but only at a whisper is still useless for calls. Raise the input level, disable stacked noise suppression, and keep a consistent distance from the capsule. Aggressive suppression combined with Bluetooth latency can make you sound absent even when the meter twitches.

If no input devices appear in the list at all, the USB audio device never registered with your computer, which points at the cable, the port, or the interface. If the device shows up but the level stays at nothing regardless of gain, check for a hardware mute switch on the headset’s inline control before assuming the worst.

One last look at the input level

With the privacy toggles, default devices, and app pickers all agreeing, the last step is confirming the capsule genuinely produces signal. Open a live input-level check, allow access when prompted, pick the same device you use for calls, and talk normally. The meter should track your voice. Nothing leaves your browser.

If your system sound panel shows movement but this page doesn’t, the browser permission is still wrong. If nothing moves anywhere, you’ve got what you need for a warranty claim or a replacement headset.