Stop unwanted Zoom screen sharing during a live meeting

A disruptive attendee can put an offensive image or a phishing URL on everyone's screen if participant sharing is open. The host or co-host can restrict sharing to hosts only during a meeting. That control is not the same as muting a participant, disabling annotations on someone else's share, or granting remote control of a computer. Know which feature is causing the problem so you can stop it without removing a useful presenter permanently.

Before you start​

Confirm you are the meeting host or have co-host privileges. Before a large event, decide who genuinely needs to present and whether you can make that person a co-host or briefly allow participant sharing. Ask presenters to close private documents and notifications before sharing an entire desktop. If a meeting is being disrupted now, prioritize stopping the current share.

Do it step by step​

1. Use Zoom's meeting controls to stop the unexpected share or ask the participant to stop. Open the Share control's host options; Zoom documents a Who can share setting that can be changed to Host only.
2. Set only hosts and co-hosts to share. In a rehearsal, have an ordinary participant attempt a screen share to confirm the rule. Do not infer success from a button that still appears in the participant's toolbar.
3. If a trusted guest must present, grant an appropriate temporary role or adjust sharing for the short presentation, then restore Host only. Explain the change to attendees so an unavailable share button is not mistaken for a technical fault.
4. Inspect participant annotation separately. If people are drawing or placing text on a shared screen, disable participant annotation using Zoom's host control even when the presenter remains allowed to share.
5. Check whether anyone was granted Remote Control. Zoom says remote control, when permitted by the sharer, can allow another person to use mouse and keyboard; it is not the same as passive screen viewing. Stop any unneeded remote-control session.
6. For an abusive attendee, remove or report them through native controls and consider locking the meeting after all expected guests have joined. Keep an incident record without sharing a recording beyond the people who need it.

Check the result​

An ordinary participant can no longer start an unwanted share, trusted presenters can still present through the planned route, annotation is intentional, and no unexpected remote-control grant remains active.

If something goes wrong​

If the restriction does not apply, verify you changed the active meeting and have the required host role. Some settings are administered centrally or differ by desktop, mobile and web clients. If a co-host still shares, remember that Host only can include co-hosts under Zoom's meeting control wording.

Know the limit​

Restricting share prevents one route of disruption, not chat spam, impersonation or recordings made outside Zoom. The host cannot see a participant's desktop merely because they joined; a person must choose to share it. Treat requests for remote control as a separate high-risk decision. Zoom participant management Zoom screen-sharing security