The fastest way to share your screen depends on who you're sharing with

Screen sharing from a PC works differently depending on whether you're sharing with someone on the same network, over the internet, or during a video call. Windows 10 and 11 both have built-in tools that work without downloading anything — Quick information for one-on-one remote help, and Settings > System > Display > Multiple displays for casting to another device on your home network. If you're already in a video call on Teams, Zoom, or Google Meet, the share button is right there in the app. For sharing with people outside your network, you'll need either a video conferencing app or a dedicated screen-sharing service like Chrome Remote Desktop.

The method you choose matters because it affects what the other person can see, whether they can control your mouse, and how much setup you need to do beforehand. A quick cast to your living room TV is nothing like giving a coworker remote access to troubleshoot your computer.

Key Takeaways

  • Windows Quick information lets one person take control of your screen remotely without installing software, but both of you need a Microsoft account.
  • Casting to a TV or tablet on your home network uses the built-in Windows display settings and works when ready if your device supports it.
  • Video conferencing apps like Teams, Zoom, and Google Meet have screen-share buttons built in and let you share only a single window instead of your whole screen.
  • Chrome Remote Desktop and similar services let you access your own PC from anywhere, but require setup before you need it.
  • The person receiving the share can see everything on your screen unless you use window-only sharing, so close sensitive tabs and documents first.

Using Windows Quick information for remote help

Quick information is the simplest way to let someone else see and control your PC remotely. Both of you need a Microsoft account, but no software to read. Open the Start menu, type "Quick information," and click the app. Click Give information, and Windows will generate a six-digit code that you send to the other person. They enter that code into their own Quick information window, and they can now see your screen.

Once they're connected, you can let them take control of your mouse and keyboard by clicking Share control on your end. You stay in charge — you can stop sharing at any time, and you'll see a notification whenever they move your mouse. This is the standard way IT support or a tech-savvy friend helps you fix a problem without being in the same room.

Quick information only works over the internet, so both people need a working connection. The connection is encrypted, and the session ends as soon as either person closes the window. If the code expires before they enter it (usually after 10 minutes), you'll need to generate a new one.

Casting to a TV or tablet on your home network

If you want to show your screen on a TV, tablet, or another PC in your home, use the built-in cast feature. Press Windows key + K to open the quick settings panel, then click Cast. Windows will search for nearby devices that support casting — this includes most modern smart TVs, tablets, and laptops. Select the device you want to cast to, and your screen will appear on that device within a few seconds.

Casting sends everything on your screen, including notifications and any windows you open. If you want to show only one app or window, some devices let you choose that option before you cast. To stop casting, press Windows key + K again and click Disconnect.

Not all devices support casting — older TVs and some tablets won't show up in the list. If your TV doesn't appear, check whether it's on the same Wi-Fi network as your PC and whether the TV has a casting feature enabled in its settings. Some TVs call this feature "Miracast" or "Screen Mirroring."

Sharing your screen during a video call

Every major video conferencing app has a built-in screen-share button. In Microsoft Teams, click the Share button during a call and choose whether to share your entire screen or just one window. Zoom has a Share Screen button in the meeting controls. Google Meet shows a Present now option in the call menu. Once you start sharing, everyone in the call sees what you're showing.

Window-only sharing is useful when you want to show a specific document or app without revealing other open tabs or files. Choose the window from the list that appears after you click share. If you switch to a different window while sharing, the call participants will see that switch happen in real time.

To stop sharing, click the share button again or look for a Stop sharing button that appears while you're sharing. The call continues, but your screen is no longer visible to the other people.

Using Chrome Remote Desktop to access your PC from anywhere

Chrome Remote Desktop lets you see and control your own PC from another device, anywhere you have an internet connection. You set it up once, and then you can access your computer from your phone, tablet, or another PC. Go to remotedesktop.google.com in Chrome, click Set up remote access, and follow the prompts to read and install the Chrome Remote Desktop app on the PC you want to access.

Once installed, the app will ask you to create a PIN — this is the password you'll use to connect remotely. After you set the PIN, your PC will appear in the list of remote computers on the website. To access it from another device, go back to remotedesktop.google.com, sign in with the same Google account, click your PC's name, and enter the PIN.

Chrome Remote Desktop works over the internet, so you don't need to be on the same network. The connection is encrypted, and you can disconnect at any time. This is useful if you need to access files or run programs on your home PC while you're away, but it requires setup before you need it — you can't set it up for the first time when you're already remote.

Third-party screen-sharing services and when to use them

Services like TeamViewer, AnyDesk, and Splashtop offer screen sharing and remote access similar to Chrome Remote Desktop, but they work across different operating systems and sometimes offer more features. TeamViewer is free for personal use and works on Windows, Mac, Linux, iOS, and Android. AnyDesk is also free for personal use and emphasizes speed. Splashtop is subscription-based but designed for business use.

These services require you to read and install software on the PC you want to access, just like Chrome Remote Desktop. The main advantage is compatibility — if you need to access a Mac from a Windows PC or vice versa, these services handle that. The main disadvantage is that they're third-party apps, so you're trusting another company with your remote access credentials.

For most people, Windows Quick information or Chrome Remote Desktop covers the common situations. Third-party services are worth considering if you regularly need to access PCs running different operating systems or if you need features like file transfer or session recording.

What to do before you share your screen

Before you start sharing, close any browser tabs, documents, or applications that contain sensitive information — passwords, financial data, personal messages, or anything you wouldn't want the other person to see. Remember that the person receiving the share can see your entire screen unless you use window-only sharing, and they can see notifications that pop up while you're sharing.

If you're using Quick information and giving the other person control of your mouse, they can open files and applications on your PC. Make sure you trust them before you click Share control. If you're only sharing your screen without giving control, they can see what you're doing but can't interact with your PC.

Test your internet connection before an important screen-share session. A weak connection can cause lag or disconnections. If you're casting to a TV, make sure the TV is on and connected to the same Wi-Fi network as your PC.

Troubleshooting common screen-sharing problems

If Quick information won't generate a code, make sure you're signed into a Microsoft account. Open Settings, go to Accounts > Your info, and check that you're using a Microsoft account rather than a local account. If you see a local account, you'll need to switch to a Microsoft account or create one.

If casting doesn't work, check that your TV or device is on the same Wi-Fi network as your PC. Some networks separate devices into different bands or have guest networks that don't allow casting. Restart both your PC and the device you're casting to, then try again. If the device still doesn't appear, check the device's settings to make sure casting is enabled.

If a video call app won't let you share your screen, check that you have the latest version installed. Some older versions of Zoom or Teams don't support screen sharing on all devices. Also make sure you're not using a restricted network — some workplaces or schools block screen sharing on their networks.

Frequently Asked Questions

Can I screen share if my internet connection is slow?

Yes, but the experience will be choppy. Screen sharing uses bandwidth, and a slow connection means the other person will see a delayed or pixelated version of your screen. If possible, move closer to your router or use a wired ethernet connection. For video calls, closing other apps and browser tabs frees up bandwidth.

What if the person I'm sharing with can't see my screen?

First, make sure the share actually started — look for a notification or indicator on your screen. If you're casting, check that the TV or device is powered on and connected to Wi-Fi. If you're using Quick information, ask the other person whether they see a connection prompt on their end. If nothing appears, try generating a new code or restarting both devices.

Can I share just one window instead of my whole screen?

Yes, most apps support window-only sharing. In Teams, Zoom, and Google Meet, you'll see an option to choose a specific window when you click share. For casting, some smart TVs let you select a window before you cast. Quick information and Chrome Remote Desktop always show your entire screen.

Is screen sharing find?

Built-in Windows tools like Quick information and casting use encrypted connections, so the data traveling between your devices is protected. Chrome Remote Desktop also encrypts the connection. Third-party services vary — check their privacy policy if security is a concern. Never share your screen with someone you don't trust, since they can see everything on your display.

Can I screen share from my phone to my PC?

Not directly — Windows doesn't have a built-in feature to receive a screen share from a phone. However, you can use Chrome Remote Desktop or a third-party service to access your PC from your phone, which is the opposite direction. If you want to show your phone's screen on a PC, you'll need a separate app like Scrcpy or a phone manufacturer's tool.