====== Troubleshooting ======

===== Audio and microphone =====

**Others cannot hear me.**

  - Check that your microphone is not muted (the microphone button in the toolbar is not crossed out).
  - **⋮ → Settings → Audio** – is the correct microphone selected? Does the indicator move when you speak?
  - Did you allow the browser to use the microphone? Click the lock / camera icon in the address bar, allow access, then reload the page.
  - Is another app using the microphone (Teams, Zoom, Discord)? Close it.

**I cannot hear others.**

  * Check the system volume and the **speaker** selection in **Settings → Audio**; use **Test sound**.
  * If you have both headphones and speakers, make sure the audio goes to the ones you are wearing.

**Echo, howling.**

  * Echo is caused by a microphone picking up sound from speakers. Use **headphones**.
  * Ask others to mute themselves when not speaking; the moderator can spot the culprit from the talking indicator.

===== Camera =====

**Others cannot see me.**

  - The camera button in the toolbar is not crossed out.
  - **⋮ → Settings → Video** – is the correct camera selected?
  - Allow the browser to use the camera (the icon in the address bar), then reload the page.
  - No other app is using the camera.
  - For an external camera, try a different USB port.

===== Entering the room =====

**I see "Waiting for the host…" and nothing happens.**

  * You can only enter a **normal (protected)** room after signing in. Click **I am the host** and sign in with eduID.
  * If you have no eduID account, this is a room that a signed-in moderator must create first – **wait** for the meeting to start and reload the page.
  * For a **public** room the sign-in happens automatically within a few seconds; if the dialog does not disappear, reload the page (F5).

**eduID sign-in fails / the page keeps bouncing back.**

  * Try a different browser or a private window (blocked third-party cookies can break sign-in).
  * Check that you are signing in under the correct **home organization**.
  * If it persists, contact support with the time of the attempt and the organization name.

**The room asks me for a password / PIN.**

  * This is a secured room. Enter the **PIN from the organizer**; it is case-sensitive. See [[:en:app:ac:mistnosti|Meeting rooms]].

===== Video and performance =====

**Choppy video, delayed audio, "weak connection".**

  * **⋮ → Performance settings** – lower the video quality or switch to **audio only**.
  * Turn your own camera off when not speaking.
  * Stop downloads and other apps that load the network; switch to a wired connection.

**Screen sharing does not work / shows a black area.**

  * On macOS, allow the browser under **Screen Recording** in //System Settings → Privacy & Security//, then restart the browser.
  * To share a video's **audio**, share a **browser tab** and tick //Share audio// (Chrome/Edge).

===== Telephone dial-in =====

See [[:en:app:ac:telefon|Joining by telephone – Troubleshooting]].

===== None of this helped =====

Contact service support (see [[:en:app:ac:zoomterms|Terms of service and privacy]]) and provide:

  * the room name and approximate time,
  * your browser name and version and operating system,
  * what you did and what happened,
  * ideally a screenshot of the error.

===== Illustrated guides (PDF) =====

Connecting and using the service, for participants: {{ :en:app:ac:cesnet-meetings-connecting-and-using.pdf |PDF}}\\
Organizer's guide (rooms, moderating, telephone): {{ :en:app:ac:cesnet-meetings-organizer-guide.pdf |PDF}}