How to Share Your Screen on Microsoft Teams

You're in a Teams meeting, ready to walk everyone through a document or demo, and you can't figure out the share button -- or worse, it's greyed out. Knowing how to share your screen on Microsoft Teams shouldn't require a tutorial, but the share tray offers more options than most people realize. Screen, window, PowerPoint Live, whiteboard, audio toggle -- each one behaves differently, and picking the wrong one can expose private notifications or leave your audience staring at a frozen frame. This guide breaks down every sharing method, when to use each, and how to troubleshoot the most common problems.

How to Share Your Screen in Microsoft Teams

Screen sharing in Microsoft Teams lets you show your desktop, a specific application window, a PowerPoint presentation, or a whiteboard to other participants during a meeting or call. It works on Windows, Mac, Linux, and mobile devices.

Here are the basic steps that apply to every Teams meeting:

1. Join or start a Teams meeting.
2. In the meeting controls toolbar (top of the screen), click the Share button (the upward arrow icon).
3. The share tray opens with your sharing options.
4. Select what you want to share: Screen, Window, PowerPoint Live, or Whiteboard.
5. A red border appears around whatever you're sharing, confirming it's live.
6. When finished, click Stop sharing in the toolbar at the top of your screen.

Before you share, toggle Include sound if you need participants to hear audio from your computer -- for example, when playing a video or demo with sound. This toggle is in the share tray and must be turned on before you start sharing.

For more ways to improve your Teams meeting experience, see our guide on getting the most from Microsoft Teams meetings.

Screen vs. Window: Which Should You Share?

This is where most people make the wrong choice. Teams gives you two primary sharing modes, and each has real trade-offs.

Sharing Your Entire Screen

When you share your screen, participants see everything on that monitor -- every window, every tab, every notification that pops up. This is useful when you need to switch between multiple applications during a presentation, such as jumping between a browser, a spreadsheet, and an email.

The risk: desktop notifications, personal messages, bookmarks, and other open tabs are all visible. If you work with dual monitors, you can choose which screen to share, so only one monitor is exposed.

Best for: Multi-app demos, technical walkthroughs, training sessions where switching between tools is expected.

Sharing a Specific Window

When you share a window, participants only see the application you selected -- nothing else on your desktop. Notifications won't appear in the shared view, and your other open applications stay private.

The downside: if you need to show something in a different application, you have to stop sharing, then reshare the new window. You can't seamlessly switch between apps the way you can with a full screen share.

Best for: Client-facing calls, sensitive environments, any meeting where you only need to show one application.

According to Microsoft's official support documentation, meeting participants will not see your notifications when you share a window -- making it the safer default for most business meetings.

PowerPoint Live: The Better Way to Present Slides

If you're presenting a slide deck, skip the screen share entirely. PowerPoint Live is built directly into Teams and gives both the presenter and the audience a better experience.

How to Use PowerPoint Live

1. Click the Share button in the meeting toolbar.
2. Under the PowerPoint Live section, select a recent file or click Browse to find your deck.
3. The presentation loads inside Teams -- no need to open PowerPoint separately.

Why PowerPoint Live Is Better Than Screen Sharing Slides

• Presenter view: You see your speaker notes, upcoming slides, and a timer while the audience only sees the current slide.
• Audience control: Participants can browse slides at their own pace without disrupting your presentation.
• Accessibility: Attendees can use screen readers and translate slides in real time.
• No desktop exposure: Unlike screen sharing, nothing else on your computer is visible.
• Reactions and engagement: Live reactions and Q&A integrate directly with the presentation view.

For teams that present regularly to clients or stakeholders, PowerPoint Live eliminates the most common screen sharing mistakes -- accidental notifications, wrong monitors, and fumbling between apps.

Need help optimizing Microsoft 365 for your team's daily workflow? Always Beyond's managed IT services include Teams configuration, user training, and ongoing support to keep your meetings running smoothly.

How to Share Your Screen on Mobile (iOS and Android)

Screen sharing works on the Teams mobile app too, though the options are more limited than on desktop.

On Android

1. Join a Teams meeting from the mobile app.
2. Tap the three dots (More options) at the bottom of the screen.
3. Select Share, then choose Share screen.
4. Confirm the system prompt to start broadcasting your screen.
5. Everything on your phone screen is now visible to meeting participants -- including notifications.

On iPhone/iPad

1. Join a Teams meeting from the mobile app.
2. Tap the three dots (More options).
3. Select Share, then choose Share screen.
4. Tap Start Broadcast when prompted.
5. To stop, return to Teams and tap Stop presenting.

Tip: Before sharing on mobile, enable Do Not Disturb mode to block notifications from appearing on the shared screen. Personal messages and app alerts will be visible to everyone in the meeting otherwise.

Troubleshooting Common Screen Sharing Problems

Why is the Share button greyed out?

If you can't click the Share button, the most likely cause is that the meeting organizer has disabled screen sharing for attendees. In Teams, the organizer can restrict sharing to specific roles. Ask the host to go to Meeting options and change "Who can present?" to "Everyone" or promote you to a presenter.

Other causes: you may be in a meeting where your organization's IT admin has disabled sharing via a Teams meeting policy, or you're using an outdated version of the Teams app.

Why is my screen share lagging or freezing?

Screen sharing performance depends on your internet bandwidth and what you're sharing. Full desktop shares with high-resolution monitors use more bandwidth than a single window share. To improve performance:

• Share a window instead of your full screen.
• Close unnecessary applications to free up system resources.
• Lower your monitor resolution temporarily if bandwidth is limited.
• Use a wired internet connection instead of Wi-Fi when possible.

If Teams performance issues persist beyond screen sharing, clearing your Microsoft Teams cache can resolve many underlying problems.

Why can't participants hear my audio when I share?

You need to toggle Include sound in the share tray before you start sharing. This setting is off by default. If you forgot to enable it, stop sharing, turn on the audio toggle, and reshare. Note that system audio sharing is only available on Windows and Mac -- it's not supported on Linux or mobile.

Share Smarter in Every Teams Meeting

Screen sharing in Microsoft Teams is straightforward once you understand the options. Use window sharing as your default for privacy. Switch to full screen when you need to move between applications. Choose PowerPoint Live for any slide presentation. And always enable Do Not Disturb or close notification-heavy apps before you share.

Getting these small details right makes the difference between a polished meeting and an awkward scramble. If your team needs help configuring Teams, training users, or managing Microsoft 365 security and performance, reach out to Always Beyond -- we help businesses build IT systems that work, so you can focus on the meeting, not the technology.