Fix common call issues fast

Start with a measurement

The fastest way to fix call issues is to confirm what the browser can actually access, then change one thing at a time and re-test. Many tool pages include a copyable report you can paste into an IT ticket.

1. Run Device Check to see which devices are detected.
2. Run Browser Test to confirm camera/mic permissions and core browser capabilities.
3. Run the specific tool for your issue (Mic/Webcam/Speaker/Ping/Upload/Echo) and re-test after each change.

Showing 20 of 20 guides.

• Fix Bluetooth Headset Mic Not Working on Windows 11

  Windows 11 (Bluetooth headsets)

  Make sure Windows is using the headset microphone (hands-free), then fix permissions and app device selection so people can hear you.

  bluetoothheadsetmicrophonewindows 11
• Unblock Camera and Microphone Permissions in Your Browser

  Chrome/Edge/Firefox/Safari

  Reset camera/microphone blocks in Chrome, Edge, Firefox, or Safari so prompts appear again and your devices work in calls.

  permissionsbrowsercameramicrophone
• Fix Black Screen from Camera on macOS

  macOS

  Fix a Mac camera black screen by releasing the camera from other apps, resetting permissions, and validating with a live Webcam Test.

  webcammacospermissionscamera
• Fix Camera Not Working in Zoom

  Zoom (desktop/web)

  Confirm the camera is detected and shows a preview, then fix Zoom video settings, permissions, and “camera busy” conflicts.

  zoomwebcamcamerapermissions
• Fix Echo and Feedback in Zoom, Teams, and Meet

  Zoom/Teams/Meet

  Stop echo fast by switching to headphones, matching devices in your call app, and validating your audio path with quick tests.

  echozoomteamsgoogle meet
• Fix Keyboard Not Working in Your Browser

  Browser (Chrome/Edge/Firefox)

  Use the DevicePrep Keyboard Test, then fix focus, shortcuts, and accessibility settings so key presses register.

  keyboardbrowserchromeedge
• Fix Microphone Not Working in Google Meet

  Google Meet (web)

  Fix Google Meet mic issues by confirming the mic signal, selecting the right input, and resetting browser/OS permissions so people can hear you.

  google meetmicrophonepermissionsbrowser
• Fix Microphone Not Working on iPhone and iPad

  iPhone/iPad (iOS/iPadOS)

  Check app mute, allow microphone permissions in iOS, and retest with an online Mic Test.

  iphoneipadiosmicrophone
• Fix Microphone Not Working on macOS

  macOS

  Allow microphone access, pick the right input, and confirm with the DevicePrep Mic Test on your Mac.

  microphonemacospermissionsinput device
• Fix Microphone Not Working on Windows 11

  Windows 11

  Confirm Windows and your browser can detect the mic, then enable permissions and pick the correct input so apps hear you on Windows 11.

  microphonewindows 11permissionsinput device
• Fix Microphone Issues in Zoom

  Zoom (macOS/Windows)

  Unmute, pick the right mic, reset permissions, and use the online Mic Test to confirm Zoom can hear you.

  zoommicrophonepermissions
• Improve Slow Network for Video Calls

  Any

  Measure ping/jitter and upload speed, then reduce congestion and Wi‑Fi instability for smoother Zoom/Teams/Meet calls.

  networklatencyjitterwifi
• Fix No Sound from Speakers on macOS

  macOS

  Choose the right output, raise volume, and confirm both channels with the DevicePrep Speaker Test.

  speakermacosoutput device
• Fix Camera Not Working in Microsoft Teams

  Microsoft Teams (macOS/Windows/Web)

  Use the DevicePrep Webcam Test, then fix permissions, device selection, and camera conflicts so Teams can see you.

  teamscamerawebcampermissions
• Fix Microphone Issues in Microsoft Teams

  Teams (desktop/web)

  Select the right mic, allow OS or browser permissions, and verify with the online Mic Test before joining Teams.

  teamsmicrophonepermissions
• Fix Webcam Not Detected on Windows 11

  Windows 11

  Turn on camera access, refresh drivers, and test with the DevicePrep Webcam Test and the Camera app.

  webcamwindows 11device manager
• Fix Webcam Not Working in Chrome

  Chrome (Windows/macOS)

  Allow the site, choose the right camera in Chrome settings, and verify with a live Webcam Test so Chrome can show video again.

  webcamchromepermissionscamera not working chrome
• Fix Webcam Not Working in Firefox

  Firefox (Windows/macOS)

  Allow camera access in Firefox, select the right device, and confirm with the DevicePrep Webcam Test.

  firefoxwebcamcamerapermissions
• Fix Zoom Speaker Audio (Run the Built-in Test)

  Zoom

  Use the DevicePrep Speaker Test and Zoom's own test to pick the right output and hear the call.

  zoomspeakeraudio output
• Fix No Sound on Windows 11 (Speakers or Headphones)

  Windows 11

  Run the DevicePrep Speaker Test, then fix output selection, Volume mixer routing, and driver issues on Windows 11.

  speakerno soundwindows 11audio output