Screen Mirroring Not Working? 10 Ways to Fix It
Introduction
Screen mirroring is a great feature- until it suddenly doesn’t work, that is. When you're trying to cast a presentation or stream a video, running into connection errors or blank screens can be frustrating. We'll talk about the technical reasons behind screen mirroring issues and walk you through solutions that work for both general devices and StarryHub users.
Screen Mirroring Not Working? Try These Quick Fixes First
Before changing advanced settings, try these basic troubleshooting steps:
- Make sure both devices support the same screen mirroring technology.
- Check that the target display is turned on and ready to receive a connection.
- Make sure both devices are connected to the same Wi-Fi network when the mirroring method requires it.
- Move the devices closer together.
- Restart your phone, computer, TV, projector, or meeting room display.
- Restart your router if you are using AirPlay or Google Cast.
- Check whether your router has AP or client isolation enabled.
- Install available software or firmware updates.
- Check the AirPlay, Cast, Miracast, or wireless display settings on the receiving device.
- Try mirroring from another source device.
If one of these steps solves the problem, you usually do not need to change anything else.
1. What Is Screen Mirroring?
Screen mirroring is not a single technology. Different devices use different wireless display protocols, and they do not all work with each other.
Screen mirroring is not a single technology. Different devices use different wireless display protocols, and they do not all work with each other. AirPlay, Miracast, and Google Cast are among the most common technologies, but they work in different ways and have different compatibility requirements. If you're not sure which technology your devices use, see our guide to Miracast vs AirPlay to understand the key differences.
This means that a phone and a TV can both support "screen mirroring" but still be incompatible.
The most common causes include:
- Incompatible devices or wireless display standards
- Devices connected to different networks
- Guest Wi-Fi or AP/client isolation
- Outdated operating systems or firmware
- AirPlay, Cast, or wireless display settings being disabled
- Temporary wireless connection problems
- Network congestion or interference
- Audio or display output settings
- Restrictions that prevent wireless display connections
The best way to troubleshoot the problem is to first identify what is happening.
Figure1-Screen mirroring on laptop
2. Common Screen Mirroring Problems and How to Fix Them
2.1The Screen Mirroring Device Is Not Showing Up
If the TV, projector, or meeting room display does not appear in the list of available devices, start with compatibility and network settings.
First, check that the receiving device supports the mirroring technology used by your source device. For example, Windows wireless display connections generally require a Miracast-compatible display or adapter. Microsoft recommends using Windows + K to check for available wireless displays on Windows 11.
For AirPlay, make sure the receiving device supports AirPlay and that AirPlay receiving is enabled.
For Google Cast, check that the source device and Cast-enabled display are connected to the same Wi-Fi network name (SSID). Google also recommends disabling AP or client isolation because these settings can prevent devices on the same network from communicating.
Also check:
- Wi-Fi is enabled on both devices.
- The target display is awake and ready to receive connections.
- Neither device is connected to a guest network.
- The devices are not separated by a network isolation setting.
- The receiving device has the latest available firmware.
2.2 Screen Mirroring Won't Connect
If your display appears in the device list but the connection fails, compatibility and software are the first things to check.
Make sure both devices support the same wireless display protocol. A device appearing in a list does not always mean that it can successfully establish a compatible mirroring session.
Then try:
- Cancel the current connection.
- Restart both devices.
- Turn wireless display or AirPlay receiving off and on again.
- Reconnect to the Wi-Fi network.
- Try the connection again.
If you are using a managed office or school network, ask the network administrator whether device-to-device communication is restricted.
2.3 Screen Mirroring Keeps Disconnecting
A connection that works for a few seconds and then drops is often related to the network environment, device distance, or software.
For Wi-Fi-based screen mirroring, try moving the source device and receiver closer together. Reduce unnecessary network traffic and avoid using guest Wi-Fi.
Google recommends keeping compatible devices reasonably close to the wireless display or streaming device and checking the Wi-Fi channel when experiencing stuttering or poor-quality casting.
You can also:
- Restart the router.
- Disconnect unnecessary wireless devices temporarily.
- Update both devices.
- Try another Wi-Fi network.
- Test with another source device.
If another phone or computer stays connected normally, the problem is more likely to be related to the original source device.
2.4 Screen Mirroring Shows a Black Screen
Sometimes the connection succeeds, but the receiving display shows a black screen.
First, check whether the source device's home screen can be mirrored. If the home screen appears correctly but a particular app shows a black screen, the problem may be related to that app or the content being played rather than the wireless display connection itself.
Also check:
- Display resolution compatibility
- The receiving device's firmware
- The source app's casting or content restrictions
- Whether the display is receiving the correct input
- Whether another application is already controlling the display
Try mirroring the device's home screen or a different application. If that works, the wireless connection itself may be functioning normally.
2.5 Screen Mirroring Has No Sound
If the image appears but there is no audio, check the volume on both devices.
For AirPlay, Apple recommends checking that the source device and the television or receiver are not muted and that the volume is turned up.
Also check whether your phone or computer is connected to another Bluetooth speaker or headset. If the audio is being routed to another output, the receiving display may not play the sound.
Try:
- Increasing the source device volume.
- Increasing the TV, projector, or display volume.
- Checking the selected audio output.
- Disconnecting an unwanted audio device.
- Restarting the mirroring connection.
2.6 Screen Mirroring Is Lagging or Stuttering
A delayed or choppy mirrored image is usually related to the wireless environment rather than a simple compatibility problem.
Try reducing network traffic, moving the devices closer together, and restarting the router.
For Google Cast, Google recommends checking the distance between devices and router, as well as making sure devices are using an appropriate Wi-Fi channel.
For presentations or video meetings, you can also consider a wired connection when low latency and maximum stability are more important than wireless convenience.
Figure2-screen mirroring:miracast, AirPlay，Google Cast
3. How to Fix Screen Mirroring on iPhone and iPad?
iPhone and iPad use AirPlay for compatible screen mirroring.
If AirPlay is not working, start with the following checks.
-
Check AirPlay Compatibility
Make sure the TV, projector, or display supports AirPlay. If it does not, you may need an Apple TV, compatible streaming device, or another supported wireless display solution.
-
Make Sure Both Devices Are on the Same Wi-Fi
For AirPlay troubleshooting, Apple recommends checking that the devices are updated and connected to the same Wi-Fi network. The devices should also be turned on and reasonably close to each other.
-
Check AirPlay Receiving Settings
On supported iPhone versions, check:
Settings > General > AirPlay & Continuity
On Mac, AirPlay receiving can be managed under:
System Settings > General > AirDrop & Handoff
Make sure AirPlay receiving is allowed where applicable.
-
Restart the Devices
Restart both the iPhone or iPad and the receiving display.
If you are using a router-based wireless connection, restarting the router can also help clear temporary network problems.
-
Check Restrictions
If AirPlay is still unavailable, check whether Home settings, content restrictions, or other device restrictions are preventing the connection. Apple specifically recommends checking Home settings and AirPlay password or content restrictions in relevant situations.
4. How to Fix Screen Mirroring on Android?
Android screen mirroring can work through different technologies depending on the device manufacturer and Android version.
You may see features such as:
- Cast
- Google Cast
- Smart View
- Wireless Display
- Screen Cast
- Screen Share
The exact name and location can vary between phones.
Check the Receiving Device
Make sure the TV, projector, or meeting room display supports the same casting or mirroring method as your phone.
If you are using Google Cast, make sure the phone and receiving device are connected to the same Wi-Fi network name (SSID). Google also recommends disabling AP/client isolation because it can prevent devices from discovering each other.
Restart the Connection
Turn wireless display or Cast off and on again, then restart both devices if necessary.
If the receiving device does not appear, try another Wi-Fi network or test with another Android device.
Check Network Settings
Avoid guest networks when possible. Guest, hotel, school, and business networks may use isolation settings that prevent connected devices from communicating.
Google notes that AP isolation can prevent a mobile device from communicating with a Google Cast-enabled display.
5. How to Fix Screen Mirroring on Windows 11?
Windows 11 supports wireless connections to compatible external displays through Miracast.
Use Windows + K
Turn on your TV, projector, or wireless display.
Then press:
Windows + K
Select the available display from the list and follow the instructions on screen. Microsoft identifies this as the standard way to connect a Windows 11 PC to a compatible wireless display.
Check Miracast Support
If your wireless display does not appear, check whether both the Windows PC and receiving display support Miracast.
Microsoft recommends making sure Wi-Fi is enabled and that the external display supports Miracast. If the display does not support Miracast, a compatible wireless display adapter may be required.
Check Wireless Display Features
If you are projecting to another Windows PC, the receiving computer may need the Wireless Display optional feature installed.
On supported Windows 11 versions, go to:
Settings > System > Projecting to this PC
Then check whether the Wireless Display feature is installed and the Wireless Display app is available.
Check Projection Mode
If the connection succeeds but the display behaves unexpectedly, press:
Windows + P
Then choose the appropriate mode:
- PC screen only
- Duplicate
- Extend
- Second screen only
For traditional screen mirroring, choose Duplicate.
6. How to Fix Screen Mirroring on Mac?
Mac uses AirPlay for compatible wireless display connections.
If your Mac cannot find the receiving display:
- Make sure the receiving display supports AirPlay.
- Make sure both devices are updated.
- Check the Wi-Fi connection.
- Make sure AirPlay receiving is enabled on the target device.
- Restart both devices.
- Try the connection again.
Apple currently recommends checking software versions, the Wi-Fi network, AirPlay receiving settings, and device restarts when AirPlay mirroring is not working.
If the Mac can connect but the image or sound is incorrect, check the selected display and audio output settings.
7. How to Fix Screen Mirroring on a TV or Projector?
Sometimes the problem is not the phone or computer. The receiving display may be the source of the issue.
Check the following:
Confirm the Input Source
Make sure the TV or projector is displaying the correct input source.
If you are using a wireless display adapter or dongle, verify that it is properly connected to the HDMI port and powered on.
Check Wireless Display Settings
Some TVs and projectors require you to open a dedicated wireless display, screen sharing, AirPlay, or casting mode before they can receive a connection.
Update the Firmware
Check the manufacturer's support page for available firmware updates.
Outdated firmware can cause compatibility problems with newer source devices.
Test Another Source Device
Try connecting another phone or computer.
If the second device works, the problem is probably related to the original source device.
If multiple devices fail to connect, investigate the receiving display or network configuration.
8. When Should You Use a Wired Connection?
Wireless screen mirroring is convenient, but it is not always the best option.
A wired connection may be preferable when:
- You need very low latency.
- The Wi-Fi network is congested.
- The wireless display connection keeps dropping.
- You are presenting important business content.
- You need consistent audio and video synchronization.
- Your source device or display does not support the same wireless protocol.
For casual screen sharing, wireless mirroring is usually convenient. For important presentations and meetings, having a wired backup can prevent unexpected connection problems.
9. Frequently Asked Questions
Does screen mirroring require Wi-Fi?
Not always. Some screen mirroring technologies use a local Wi-Fi network, while others, such as Miracast, can establish a direct wireless connection. An internet connection is not always required.
Can I screen mirror without an internet connection?
Yes. Some screen mirroring methods can work without internet access as long as the devices can establish a direct wireless or local network connection.
Is screen mirroring the same as casting?
Not exactly. Screen mirroring duplicates your entire device screen, while casting typically sends specific content, such as a video or photo, to another device.
Does screen mirroring work with any TV or projector?
No. The source device and display need to support compatible screen mirroring technologies, such as AirPlay, Miracast, or Google Cast. If they are not compatible, you may need a supported adapter or another connection method.
Final Thoughts
When screen mirroring stops working, the problem is usually not as complicated as it first appears.
Start with the basics: confirm that the devices are compatible, check the network, make sure the correct wireless display feature is enabled, and restart both devices. If the device still cannot connect, identify the specific problem—such as a missing device, failed connection, black screen, missing audio, or lag—and troubleshoot that issue directly.
For iPhone and Mac users, check AirPlay settings and network requirements. For Android users, check the casting method and local network configuration. For Windows 11, verify Miracast support and use Windows + K to connect to a compatible wireless display.
