Screen share not working is the most frustrating issue faced by LG Smart TV users worldwide. It occurs because of unstable internet connectivity, outdated firmware, wrong input, etc. Nonetheless, there are some workarounds to fix the error or prevent it from happening again.
This article will teach you how to troubleshoot and resolve the screen share not working issue on LG TV quickly.
How to Fix Screen Share Not Working on LG TV
Although LG Smart TVs are great, they can sometimes experience issues. If you are having trouble with screen sharing, there are several potential reasons and solutions to help you mirror your favorite content on your LG Smart TV.
- Screen Share Won’t Respond
- Screen Share Malfunctions
- Screen Share Doesn’t Show
- Screen Share Turns Off
Screen Share Won’t Respond
Due to some technical errors, the screen share won’t respond properly. Here are the specific reasons and solutions for the error.
- Incorrect input source
- Temporary bugs
- Technical glitches
- Unstable internet connection
Try out the below fixes if screen share won’t respond on your LG Smart TV.
1. Unpair and Re-pair the Casting Device
Sometimes a simple unpairing and re-pairing of the casting device will resolve the screen share issue on your LG smart TV.
 Turn on your LG Smart TV and press the Home button on your remote control.
 From the home screen, scroll right and select Device Connector.
 Under Device Connector settings, select your paired casting device (smartphone, PC, or gaming console).
 After that, select Screen Share and hit Start.
 Navigate to the top of the screen and click the Delete Pairing History option.
 Now, your device will unpair from the LG TV. You can pair the screen share device to the TV again to fix the error.
2. Change the Input Source
If you forget to change the input source on LG TV to screen sharing, you may face issues. So, overview the input sources and check if it’s working properly.
 After launching your LG TV, press the Input keys on your remote control to change the input source to mirroring mode.
 If you don’t have the Input key on your remote control, navigate to the Settings option and select Inputs/Sources from the available options.
 After that, under Active Inputs, select Screen Share.
3. Check the Internet Connection
For instance, ensure connect your LG TV to a WIFI connection and that the device from which you are about to screen mirror uses the same WiFi network.
- Perform an internet speed test on LG TV or other devices and ensure the download speed is above 5 Mbps.
- Instead of using a wireless WiFi network, you can connect your LG TV to a wired internet connection for high-speed bandwidth.
- If there’s an issue with your WiFi router, you can soft reset it by just unplugging it and plugging it back.
Screen Share Malfunctions
If your LG TV malfunctions while screen sharing any content from your smartphone, here are the causes and fixes.
- Low-frequency band
- Outdated firmware
- Device interruptions
Proceed with these fixes to fix screen share problems on your LG Smart TV.
1. Disable Bluetooth Devices
- When two or more Bluetooth devices simultaneously connect at the same time, an error may occur. So, you can disable all the Bluetooth devices near your LG TV to eradicate the error.
2. Update LG TV Firmware
If your firmware is outdated, you won’t get access to all features on your LG TV, which includes screen share. So, update your LG TV firmware to its latest version to solve the issue.
 Power on your LG TV and navigate Settings.
 Select All Settings and choose the General menu from the list of options.
 Click About this TV option and tap Check for Updates.
 When there’s an update available, you will get a confirmation pop-up.
 Click Yes to proceed with the update.
Note: You can enable the Allow Automatic Updates to update the firmware automatically when there’s a new update available.
 Once the firmware is updated, you can try using the screen share feature and check if the issue gets resolved or not.
Screen Share Doesn’t Show Up
Sometimes the contents from your screening device may not be displayed on your LG TV, while screen sharing. Here are the reasons and fixes for the issue.
- Incorrect settings
- Copyright issues
- Interference between devices
You can disable all the incorrect settings on your LG TV and screening device to fix the issue.
1. Disable the Firewall
A firewall is nothing but a security system that keeps track of and controls incoming and outgoing network traffic in terms of predetermined security rules. So, there’s a possibility of breach while screen sharing from your PC to TV. You can disable the firewall on your PC to share the screen.
 Turn on your PC and press the Windows + I keys simultaneously on the keyboard to open Settings.
 From there, navigate to the Search bar, enter Firewall & network protection, and select it.
 Next, choose Domain Network.
 Under Domain Network, disable the Microsoft Defender Firewall option.
 A popup will display for confirmation. Click Yes.
 Now, proceed with the same steps for the Private Network option under the Firewall & network protection page.
 Once done, try to share your screen with LG TV and make sure the issue is solved.
2. Disable Simplink Feature
Simplink on LG Smart TV allows the users to control all the connected HDMI-compatible devices with their TV remote control. On the contrary, it may also have a negative effect on screen sharing. So, disable the feature to resolve the issue.
 Turn on your LG Smart TV and press the Settings button on your remote control.
 Then, select All Settings and navigate to the Connection Settings menu.
 Now, highlight the Quick Start/Simplink (HDMI-CEC) option and turn it Off.
 After that, turn off your TV and turn it back on after a few minutes and try to proceed with screen share.
3. Check Copyrights Issues
If the above reason isn’t the cause of the issue, switch to the next step.
4. Check AirPlay Settings
When you try to AirPlay or screen mirroring from your iPhone or Mac, and the content doesn’t show on your LG TV, you need to check the AirPlay settings. If you have enabled strict settings on AirPlay or set it up wrong, you might not be able to screen share. Hence, re-verify the AirPlay settings and try again.
5. Try Windows Presentation Mode
If you are screen sharing the content on LG TV by means of Connect Quick Action (Windows+K) and doesn’t work you should try a workaround method. We suggest using Presentation Mode (Windows+P) for an effective and interrupt-free screen share.
6. Remove Obstacles
If you have any obstacles in the middle of the TV and screen sharing device, you might not be able to mirror the content full-fledged. Check the obstacle and remove it appropriately and examine whether the screen share is working fine.
Screen Share Turns Off
If the screen share feature turns off repeatedly, it indicates a technical glitch in your system.
- Technical glitches
- Improper TV settings
- Issues in screen sharing device
You can perform basic power cycle and factory reset procedures on your LG TV to fix the issue.
1. Power Cycle LG TV
 Turn off your LG TV and remove all the cables from the HDMI port of your TV.
 Unplug the power cable from the wall outlet.
 Wait for 3-5 minutes, leaving the TV unplugged.
 After that, connect all the cables to the TV’s HDMI port and plug the power cable back into a wall outlet.
 Now, turn on your LG TV and try to perform screen mirroring.
2. Reboot Screen Sharing Device
When the screen sharing is not working on LG TV from your Android, iPhone, or Windows, it can be due to technical glitches on the latter devices. Try rebooting your smartphone and desktop to fix the issue.
3. Reset LG TV
If none of the above methods work, try resetting your LG Smart TV.
 Press the Home button on your remote control and navigate the home screen.
 From there, click Settings and select All Settings.
 Under All Settings, click General.
 Further, select Reset to Initial Settings and hit OK.
 Once your TV restarts, it will revert to its default settings.
Contact LG Support
If none of those above-mentioned troubleshooting techniques aid you in resolving the screen share not working issue on LG TV, don’t worry. You can contact LG Customer Support to get assistance. The experts will solve any issue regarding LG Smart TVs. Additionally, you can replace your TV with a new one if your LG TV is under warranty.
Yes. You can use the Smart Share on LG TV to stream mirrored content from smartphones and desktops.
Yes. You can screen share or mirror the content to an LG TV without using WiFi with the support of HDMI cables.
There are various reasons present behind this issue. However, you can fix this by following the troubleshooting methods.
1. Ensure, the devices are connected to the same WiFi.
2. Unpair and Re-pair the device.
3. Reboot the devices and try connecting.