通話の問題を素早く解決

まず測定から始めましょう

通話の問題を最速で解決するには、ブラウザが実際にアクセスできるものを確認し、一度に一つだけ変更して再テストすることです。多くのツールページにはITチケットに貼り付けられるコピー可能なレポートが含まれています。

1. デバイスチェックを実行して、検出されたデバイスを確認。
2. ブラウザテストを実行して、カメラ/マイクの権限とブラウザの基本機能を確認。
3. 問題に対応するツール（マイク/ウェブカメラ/スピーカー/Ping/アップロード/エコー）を実行し、変更ごとに再テスト。

20件 / 全20件のガイドを表示中。

• 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
• "Microphone Not Working in Google Meet? Here's the Fix"

  Google Meet (web)

  "Fix your Google Meet microphone in minutes. Step-by-step guide covering browser permissions, device settings, and OS-level fixes for Windows and Mac."

  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
• "Microphone Not Working on Mac? Fix It in Minutes"

  macOS

  "Fix your Mac microphone with step-by-step instructions. Covers System Settings permissions, app-specific fixes, and hardware troubleshooting for macOS."

  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
• "Webcam Not Working in Chrome? Quick Fix Guide"

  Chrome (Windows/macOS)

  "Fix your camera in Chrome with these proven steps. Covers permissions, site settings, extension conflicts, and driver issues on Windows and macOS."

  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
• "No Sound on Windows 11? Fix Speakers in Minutes"

  Windows 11

  "Fix Windows 11 audio issues fast. Covers sound settings, driver updates, audio service restarts, and hardware checks to get your speakers working again."

  speakerno soundwindows 11audio output