How to Hide a Window From Screen Share on Windows 10 and 11

Windows has no Settings toggle that says "hide this app from screen share". That surprises people. The building block exists (a Win32 call named SetWindowDisplayAffinity), but only the app that owns a window can switch it on, so the choice belongs to developers rather than users. Everything else on this page works around that fact.

The four methods compared

Pick based on one question: do you need to share your entire screen? If not, method 1 is free, built in and good enough for most calls.

Method 1: Share one window instead of your whole screen

This is the answer most people need. When Zoom, Teams or Google Meet capture a single window, they capture that window's own content, so your other apps never enter the stream. Notifications don't show either, because toast pop-ups are separate windows.

Zoom (Windows app)

1. Click Share in the meeting controls.
2. On the Screens tab, pick the application window rather than "Screen".
3. To share two apps at once, hold Ctrl and click both. Zoom's help notes they must be on the same screen to be visible (Zoom Support: sharing your screen).
4. Click Share.

Microsoft Teams

1. Select Share in the meeting controls.
2. Choose Window and pick the app. Microsoft describes Window as showing "just one window, and no notifications or other desktop activity" (Microsoft Support).
3. For a deck, choose the PowerPoint file instead. PowerPoint Live keeps your speaker notes on your side only.

Google Meet (Chrome or Edge)

1. Click Present now.
2. Choose A window (or A tab for a single Chrome tab, which also carries that tab's audio).
3. Pick the window and click Share (Google Meet Help).

Where window sharing goes wrong

• Pop-up dialogs vanish. A Save dialog or an Excel "Format Cells" box is its own window, so viewers may not see it. You end up saying "trust me, I clicked OK."
• Switching apps means re-sharing. If the demo moves from the browser to a terminal, you stop and start the share or you pre-select both with Ctrl in Zoom.
• Full-screen slideshows can be a different window from the editor you selected. Start the slideshow first, then share it, or share the PowerPoint file directly in Teams.
• Old clients leaked overlapping windows. In 2021 SySS reported that Zoom through version 5.5.4 could briefly send other windows that were placed on top of a shared window (CVE-2021-28133). Keep your meeting client updated.

Method 2: Keep private windows on a second monitor

If you share "Screen 1" and keep your notes on "Screen 2", viewers only get Screen 1. It's dull and it works with every meeting app.

1. Press Win + P and choose Extend. Not Duplicate. Duplicate mirrors everything onto both screens, so the "private" monitor stops being private.
2. Move each private window with Win + Shift + Left or Right.
3. When you start the share, pick the monitor that holds only what you want shown. Zoom lists screens as "Screen 1" and "Screen 2"; Teams shows thumbnails of each display.
4. Turn on Do Not Disturb (see the notifications section), because toasts appear on your main display, which is often the shared one.

The catch is obvious on a laptop in a hotel room. There's no second screen. And during a live demo your eyes keep drifting to the other monitor, which looks odd on camera.

Method 3: Use a virtual desktop as a clean stage

Windows 10 and 11 let you create a separate desktop with only presentation windows on it. Press Win + Ctrl + D to create one, Win + Tab to see them all, and Win + Ctrl + Left/Right to switch.

Here's the trap. When you share your entire screen, the meeting app captures the monitor, so it shows whichever desktop is on that monitor right now. Switch to your notes desktop for two seconds and everyone sees your notes desktop. Virtual desktops keep a tidy stage; they don't hide anything while you're looking at it. Pair this method with window sharing, or use it only to stop stray windows from sitting in the background of a full-screen share.

Method 4: Use a window that is excluded from screen capture

Since Windows 10 version 2004 (build 19041), an app can call SetWindowDisplayAffinity with WDA_EXCLUDEFROMCAPTURE. Microsoft's documentation says the window "is displayed only on a monitor. Everywhere else, the window does not appear at all" (Microsoft Learn). Screen sharing, screenshots and screen recorders that go through Windows get a frame with that window missing, and the content underneath shows through as if it weren't there.

You may have met this family of settings already. In May 2025 Signal Desktop switched on a window-protection setting it calls Screen security by default on Windows 11, so that Microsoft Recall couldn't capture chats (Signal blog). The older value, WDA_MONITOR, works the same way but leaves a black rectangle in the capture instead of removing the window.

Two limits decide whether this method fits you:

• The app has to do it for itself. Windows only accepts the call from the process that owns the window. Utilities that claim to hide any app (Chrome, Outlook, Notepad) have to load code into those other processes, which antivirus tools may flag and many company IT policies forbid.
• It hides from capture, not from displays. A projector, a duplicated monitor, a hardware capture card on your HDMI output and a phone camera all see the window, because to Windows they're displays or they're looking at one.

The full technical breakdown, with a C# and C++ sample, is in WDA_EXCLUDEFROMCAPTURE explained.

How AuraCloak uses it

AuraCloak is an invisible AI overlay for Windows. It applies WDA_EXCLUDEFROMCAPTURE to its own window, so Zoom, Teams, Google Meet in a browser, Slack, Discord, OBS, Loom, Xbox Game Bar, Snipping Tool and PrintScreen leave it out, even when you share the entire screen. You can type notes into it, ask an AI model a question, or load ChatGPT or Claude in browser mode with your normal login. Press Ctrl + Alt + Space to show or hide it.

Building it taught us where the flag stops. A window doesn't pass the setting to windows it opens. The Windows file picker that appears when you attach a file is a separate native window, so we hook its creation and apply the flag before it's ever drawn. Sign-in pop-ups from WebView2 belong to the Edge process, which the overlay can't flag, so we host them in our own window instead. Right-click menus are separate windows too. If you build something similar, test every pop-up, not just the main window. On Windows builds before 2004, AuraCloak falls back to WDA_MONITOR, which means viewers see a black box where the overlay sits. If you're presenting with a slide-and-notes workflow, the presentations use case walks through that setup.

Before any share: silence notifications

Most "they saw my private stuff" stories aren't about windows at all. They're about a toast that slid in from the corner with a message preview.

1. Windows 11: open Settings > System > Notifications and switch on Do not disturb. You can also open the notification center (Win + N) and click the bell.
2. Windows 10: open Settings > System > Focus assist and choose Alarms only.
3. Close or minimize email and chat clients that show in-app banners, since those aren't always Windows notifications.
4. In Teams, Microsoft notes that turning on Include sound shares all computer sound, including notification chimes. Leave it off unless you're playing a video.

How to check it worked before the real call

Don't trust a guide, including this one. Start a test meeting with yourself on a second device (your phone in the Zoom or Teams app works), share the entire screen, and look at the phone. Then take a screenshot with Win + Shift + S and open it. If a private window appears in either, it'll appear for your audience. Our screen share visibility test turns that into a printable checklist.

FAQ

Can I hide one app from screen share without installing anything?

Yes, if you share a single window instead of your whole screen. Zoom, Teams and Google Meet all offer a window option, and only that window is sent. Windows has no built-in switch to hide a specific app while you share the entire screen.

Does hiding a window from screen share work on Windows 10?

Yes, from Windows 10 version 2004 (build 19041, the May 2020 Update) onward. On older builds, an app that asks to be excluded from capture is shown to viewers as a black rectangle instead of disappearing.

Will viewers see a black box where my hidden window is?

Not on Windows 10 version 2004 or later with WDA_EXCLUDEFROMCAPTURE. Viewers see whatever is behind the window. A black box appears only on older Windows builds or with apps that use the older WDA_MONITOR setting.

Can a hidden window still be seen or recorded?

Yes. A phone or camera pointed at your monitor sees it, and so do projectors, duplicated displays and hardware capture cards, because they receive the monitor signal. Microsoft says the flag is not a security feature.

Does this work in Google Meet in a browser?

Yes. Chrome and Edge capture the screen through Windows capture APIs, so a window excluded from capture is left out of a Meet presentation the same way it is in the Zoom or Teams desktop apps.