Screen sharing problems in Teams generally split into two categories: a black/frozen screen that others see while you're sharing (usually a graphics driver or hardware acceleration issue), or the share option itself being unavailable or greyed out (usually a permissions issue).
If others see a black or frozen screen while you're sharing
This is most commonly related to graphics hardware acceleration conflicts, especially on systems with both integrated and dedicated graphics (common on laptops):
Fix: disable GPU hardware acceleration in Teams
- Click your profile picture in Teams → Settings
- Go to General
- Find and check Disable GPU hardware acceleration
- Restart Teams completely for the change to take effect
This forces Teams to render screen sharing using the CPU rather than the GPU, which resolves black-screen issues caused by certain graphics driver and hardware acceleration conflicts, at a small cost to performance.
Fix: update your graphics driver
- Right-click the Start button → Device Manager
- Expand Display adapters
- Right-click your graphics card → Update driver → "Search automatically for drivers"
- For more complete updates, consider downloading the latest driver directly from your graphics card manufacturer's site (NVIDIA, AMD, or Intel) rather than relying solely on Windows Update
If the share button itself doesn't work or is greyed out
This is more likely a permissions issue, especially in larger meetings:
- Meeting role restrictions. If you're an "Attendee" rather than an "Organizer" or "Presenter" in a meeting, the meeting organizer may have restricted screen sharing to presenters only. Check with the organizer, or if you organized the meeting yourself, check the meeting options to confirm who's allowed to present.
- Windows-level screen recording permission. Similar to camera/microphone, Windows has a separate privacy permission for screen capture: go to Settings → Privacy & security → App permissions and look for anything related to screen capture or recording, and confirm Teams is allowed.
If sharing a specific window (not full screen) doesn't work
Some applications, particularly ones running with elevated administrator privileges or certain DRM-protected video content, can't be captured by screen sharing even when general screen sharing works fine for everything else. This is by design in those specific apps, not a Teams bug — if you need to share something from an app like this, sharing your entire screen instead of just that window sometimes works where window-specific sharing doesn't, though some protected content will still appear black even when sharing the full screen.
If audio doesn't share along with your screen
By default, Teams doesn't automatically include system audio when you share your screen — you need to explicitly enable it. When you start sharing, look for an "Include computer sound" or similar toggle in the share menu/toolbar, and make sure it's turned on if you need others to hear audio from a video or app you're sharing.